56657260 has 48 divisors (see below), whose sum is σ = 137440800. Its totient is φ = 19389440.

The previous prime is 56657239. The next prime is 56657261. The reversal of 56657260 is 6275665.

It is a super-2 number, since 2×56657260² = 6420090221415200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (56657261) 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 15 ways as a sum of consecutive naturals, for example, 3835 + ... + 11314.

It is an arithmetic number, because the mean of its divisors is an integer number (2863350).

Almost surely, 2^56657260 is an apocalyptic number.

It is an amenable number.

56657260 is an abundant number, since it is smaller than the sum of its proper divisors (80783540).

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

56657260 is a wasteful number, since it uses less digits than its factorization.

56657260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15186 (or 15184 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 56657260 is about 7527.1016998577. The cubic root of 56657260 is about 384.0771962133.

The spelling of 56657260 in words is "fifty-six million, six hundred fifty-seven thousand, two hundred sixty".