56521624 has 16 divisors (see below), whose sum is σ = 107716320. Its totient is φ = 27797280.

The previous prime is 56521613. The next prime is 56521631. The reversal of 56521624 is 42612565.

It is a congruent number.

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, 57424 + ... + 58399.

It is an arithmetic number, because the mean of its divisors is an integer number (6732270).

Almost surely, 2^56521624 is an apocalyptic number.

It is an amenable number.

56521624 is a deficient number, since it is larger than the sum of its proper divisors (51194696).

56521624 is a wasteful number, since it uses less digits than its factorization.

56521624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115890 (or 115886 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 56521624 is about 7518.0864586675. The cubic root of 56521624 is about 383.7704610536.

The spelling of 56521624 in words is "fifty-six million, five hundred twenty-one thousand, six hundred twenty-four".