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553540 = 225132129
BaseRepresentation
bin10000111001001000100
31001010022111
42013021010
5120203130
615510404
74463551
oct2071104
91033274
10553540
11348979
12228404
13164c50
14105a28
15ae02a
hex87244

553540 has 24 divisors (see below), whose sum is σ = 1252440. Its totient is φ = 204288.

The previous prime is 553529. The next prime is 553543. The reversal of 553540 is 45355.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4 + 553536 = 2^2 + 744^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 805 + ... + 1324.

It is an arithmetic number, because the mean of its divisors is an integer number (52185).

2553540 is an apocalyptic number.

It is an amenable number.

553540 is an abundant number, since it is smaller than the sum of its proper divisors (698900).

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

553540 is a wasteful number, since it uses less digits than its factorization.

553540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151 (or 2149 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 553540 is about 744.0026881672. The cubic root of 553540 is about 82.1075329257.

Adding to 553540 its reverse (45355), we get a palindrome (598895).

The spelling of 553540 in words is "five hundred fifty-three thousand, five hundred forty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 2129 4258 8516 10645 21290 27677 42580 55354 110708 138385 276770 553540