56015616 has 36 divisors (see below), whose sum is σ = 149085272. Its totient is φ = 18671616.

The previous prime is 56015599. The next prime is 56015633. The reversal of 56015616 is 61651065.

It is an interprime number because it is at equal distance from previous prime (56015599) and next prime (56015633).

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, 35701 + ... + 37236.

Almost surely, 2^56015616 is an apocalyptic number.

It is an amenable number.

56015616 is an abundant number, since it is smaller than the sum of its proper divisors (93069656).

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

56015616 is an equidigital number, since it uses as much as digits as its factorization.

56015616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72956 (or 72942 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 56015616 is about 7484.3580887074. The cubic root of 56015616 is about 382.6217955510.

The spelling of 56015616 in words is "fifty-six million, fifteen thousand, six hundred sixteen".