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54131200 = 29524229
BaseRepresentation
bin1100111001111…
…1101000000000
310202212011001021
43032133220000
5102324144300
65212115224
71225051624
oct316375000
9122764037
1054131200
1128612632
1216165b14
13b2a38c6
147291184
154b43d1a
hex339fa00

54131200 has 60 divisors (see below), whose sum is σ = 134145990. Its totient is φ = 21647360.

The previous prime is 54131191. The next prime is 54131201. The reversal of 54131200 is 213145.

It can be written as a sum of positive squares in 3 ways, for example, as 52533504 + 1597696 = 7248^2 + 1264^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (54131201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10686 + ... + 14914.

Almost surely, 254131200 is an apocalyptic number.

54131200 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 54131200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67072995).

54131200 is an abundant number, since it is smaller than the sum of its proper divisors (80014790).

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

54131200 is an equidigital number, since it uses as much as digits as its factorization.

54131200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257 (or 4236 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 54131200 is about 7357.3908418678. The cubic root of 54131200 is about 378.2821815393.

Adding to 54131200 its reverse (213145), we get a palindrome (54344345).

The spelling of 54131200 in words is "fifty-four million, one hundred thirty-one thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 128 160 200 256 320 400 512 640 800 1280 1600 2560 3200 4229 6400 8458 12800 16916 21145 33832 42290 67664 84580 105725 135328 169160 211450 270656 338320 422900 541312 676640 845800 1082624 1353280 1691600 2165248 2706560 3383200 5413120 6766400 10826240 13532800 27065600 54131200