56625921 has 24 divisors (see below), whose sum is σ = 90571104. Its totient is φ = 33802560.

The previous prime is 56625917. The next prime is 56625923. The reversal of 56625921 is 12952665.

56625921 is a `hidden beast` number, since 5 + 6 + 62 + 592 + 1 = 666.

It is not a de Polignac number, because 56625921 - 2² = 56625917 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56625923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2365 + ... + 10901.

It is an arithmetic number, because the mean of its divisors is an integer number (3773796).

Almost surely, 2^56625921 is an apocalyptic number.

It is an amenable number.

56625921 is a deficient number, since it is larger than the sum of its proper divisors (33945183).

56625921 is a wasteful number, since it uses less digits than its factorization.

56625921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8621 (or 8618 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 56625921 is about 7525.0196677484. The cubic root of 56625921 is about 384.0063678957.

The spelling of 56625921 in words is "fifty-six million, six hundred twenty-five thousand, nine hundred twenty-one".