557564 has 12 divisors (see below), whose sum is σ = 1115184. Its totient is φ = 238944.

The previous prime is 557551. The next prime is 557567. The reversal of 557564 is 465755.

It is a happy number.

557564 is an admirable number.

It is a super-2 number, since 2×557564² = 621755228192, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 557564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9929 + ... + 9984.

It is an arithmetic number, because the mean of its divisors is an integer number (92932).

2⁵⁵⁷⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

557564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

557564 is a wasteful number, since it uses less digits than its factorization.

557564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19924 (or 19922 counting only the distinct ones).

The product of its digits is 21000, while the sum is 32.

The square root of 557564 is about 746.7020824934. The cubic root of 557564 is about 82.3060150024.

Subtracting from 557564 its reverse (465755), we obtain a square (91809 = 303²).

The spelling of 557564 in words is "five hundred fifty-seven thousand, five hundred sixty-four".