56566290 has 48 divisors (see below), whose sum is σ = 149232384. Its totient is φ = 13712160.

The previous prime is 56566283. The next prime is 56566319. The reversal of 56566290 is 9266565.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4162 + ... + 11421.

It is an arithmetic number, because the mean of its divisors is an integer number (3109008).

Almost surely, 2^56566290 is an apocalyptic number.

56566290 is an abundant number, since it is smaller than the sum of its proper divisors (92666094).

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

56566290 is a wasteful number, since it uses less digits than its factorization.

56566290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15615 (or 15604 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 56566290 is about 7521.0564417507. The cubic root of 56566290 is about 383.8715254891.

The spelling of 56566290 in words is "fifty-six million, five hundred sixty-six thousand, two hundred ninety".