56537816 has 32 divisors (see below), whose sum is σ = 108254640. Its totient is φ = 27675648.

The previous prime is 56537809. The next prime is 56537821. The reversal of 56537816 is 61873565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167600 + ... + 167936.

Almost surely, 2^56537816 is an apocalyptic number.

It is an amenable number.

56537816 is a deficient number, since it is larger than the sum of its proper divisors (51716824).

56537816 is a wasteful number, since it uses less digits than its factorization.

56537816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723 (or 719 counting only the distinct ones).

The product of its digits is 151200, while the sum is 41.

The square root of 56537816 is about 7519.1632513199. The cubic root of 56537816 is about 383.8071043627.

The spelling of 56537816 in words is "fifty-six million, five hundred thirty-seven thousand, eight hundred sixteen".