56615490 has 32 divisors (see below), whose sum is σ = 150975360. Its totient is φ = 15097392.

The previous prime is 56615483. The next prime is 56615509. The reversal of 56615490 is 9451665.

56615490 is a `hidden beast` number, since 56 + 61 + 549 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104574 + ... + 105113.

It is an arithmetic number, because the mean of its divisors is an integer number (4717980).

Almost surely, 2^56615490 is an apocalyptic number.

56615490 is an abundant number, since it is smaller than the sum of its proper divisors (94359870).

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

56615490 is a wasteful number, since it uses less digits than its factorization.

56615490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209703 (or 209697 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 56615490 is about 7524.3265479377. The cubic root of 56615490 is about 383.9827873144.

The spelling of 56615490 in words is "fifty-six million, six hundred fifteen thousand, four hundred ninety".