56570904 has 96 divisors (see below), whose sum is σ = 173737200. Its totient is φ = 16485120.

The previous prime is 56570893. The next prime is 56570933. The reversal of 56570904 is 40907565.

56570904 is a `hidden beast` number, since 565 + 7 + 0 + 90 + 4 = 666.

56570904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16194 + ... + 19374.

Almost surely, 2^56570904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56570904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86868600).

56570904 is an abundant number, since it is smaller than the sum of its proper divisors (117166296).

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

56570904 is a wasteful number, since it uses less digits than its factorization.

56570904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225 (or 3218 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 56570904 is about 7521.3631743189. The cubic root of 56570904 is about 383.8819624181.

The spelling of 56570904 in words is "fifty-six million, five hundred seventy thousand, nine hundred four".