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5500000 = 255611
BaseRepresentation
bin10100111110110001100000
3101100102120201
4110332301200
52402000000
6313514544
764514662
oct24766140
911312521
105500000
113117260
121a12a54
1311a754c
14a32532
1573996a
hex53ec60

5500000 has 84 divisors (see below), whose sum is σ = 14765436. Its totient is φ = 2000000.

The previous prime is 5499979. The next prime is 5500003. The reversal of 5500000 is 55.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 5500000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5500003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 499995 + ... + 500005.

It is an arithmetic number, because the mean of its divisors is an integer number (175779).

Almost surely, 25500000 is an apocalyptic number.

5500000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7382718).

5500000 is an abundant number, since it is smaller than the sum of its proper divisors (9265436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5500000 is an frugal number, since it uses more digits than its factorization.

5500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51 (or 18 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 10.

The square root of 5500000 is about 2345.2078799117. The cubic root of 5500000 is about 176.5174167663.

Adding to 5500000 its reverse (55), we get a palindrome (5500055).

Subtracting from 5500000 its reverse (55), we obtain a palindrome (5499945).

5500000 divided by its reverse (55) gives a 5-th power (100000 = 105).

It can be divided in two parts, 5 and 500000, that added together give a palindrome (500005).

The spelling of 5500000 in words is "five million, five hundred thousand".

Divisors: 1 2 4 5 8 10 11 16 20 22 25 32 40 44 50 55 80 88 100 110 125 160 176 200 220 250 275 352 400 440 500 550 625 800 880 1000 1100 1250 1375 1760 2000 2200 2500 2750 3125 4000 4400 5000 5500 6250 6875 8800 10000 11000 12500 13750 15625 20000 22000 25000 27500 31250 34375 44000 50000 55000 62500 68750 100000 110000 125000 137500 171875 220000 250000 275000 343750 500000 550000 687500 1100000 1375000 2750000 5500000