56015505 has 48 divisors (see below), whose sum is σ = 119508480. Its totient is φ = 23635584.

The previous prime is 56015489. The next prime is 56015539. The reversal of 56015505 is 50551065.

56015505 is a `hidden beast` number, since 5 + 601 + 5 + 50 + 5 = 666.

It is not a de Polignac number, because 56015505 - 2⁴ = 56015489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2745 + ... + 10934.

It is an arithmetic number, because the mean of its divisors is an integer number (2489760).

Almost surely, 2^56015505 is an apocalyptic number.

It is an amenable number.

56015505 is an abundant number, since it is smaller than the sum of its proper divisors (63492975).

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

56015505 is a wasteful number, since it uses less digits than its factorization.

56015505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13710 (or 13707 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 56015505 is about 7484.3506732381. The cubic root of 56015505 is about 382.6215428176.

The spelling of 56015505 in words is "fifty-six million, fifteen thousand, five hundred five".