56616520 has 32 divisors (see below), whose sum is σ = 127785600. Its totient is φ = 22575808.

The previous prime is 56616493. The next prime is 56616533. The reversal of 56616520 is 2561665.

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, 11841 + ... + 15919.

It is an arithmetic number, because the mean of its divisors is an integer number (3993300).

Almost surely, 2^56616520 is an apocalyptic number.

It is an amenable number.

56616520 is an abundant number, since it is smaller than the sum of its proper divisors (71169080).

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

56616520 is a wasteful number, since it uses less digits than its factorization.

56616520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4437 (or 4433 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 56616520 is about 7524.3949922901. The cubic root of 56616520 is about 383.9851158872.

The spelling of 56616520 in words is "fifty-six million, six hundred sixteen thousand, five hundred twenty".