56715904 has 32 divisors (see below), whose sum is σ = 129132000. Its totient is φ = 24306432.

The previous prime is 56715881. The next prime is 56715929. The reversal of 56715904 is 40951765.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30754 + ... + 32545.

It is an arithmetic number, because the mean of its divisors is an integer number (4035375).

Almost surely, 2^56715904 is an apocalyptic number.

It is an amenable number.

56715904 is an abundant number, since it is smaller than the sum of its proper divisors (72416096).

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

56715904 is an equidigital number, since it uses as much as digits as its factorization.

56715904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63320 (or 63308 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 56715904 is about 7530.9962156411. The cubic root of 56715904 is about 384.2096655935.

It can be divided in two parts, 567 and 15904, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 56715904 in words is "fifty-six million, seven hundred fifteen thousand, nine hundred four".