56561634 has 12 divisors (see below), whose sum is σ = 122550246. Its totient is φ = 18853872.

The previous prime is 56561627. The next prime is 56561663. The reversal of 56561634 is 43616565.

56561634 is a `hidden beast` number, since 5 + 6 + 5 + 616 + 34 = 666.

It can be written as a sum of positive squares in only one way, i.e., 47651409 + 8910225 = 6903^2 + 2985^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1571139 + ... + 1571174.

Almost surely, 2^56561634 is an apocalyptic number.

56561634 is an abundant number, since it is smaller than the sum of its proper divisors (65988612).

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

56561634 is a wasteful number, since it uses less digits than its factorization.

56561634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3142321 (or 3142318 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 56561634 is about 7520.7469043972. The cubic root of 56561634 is about 383.8609929802.

The spelling of 56561634 in words is "fifty-six million, five hundred sixty-one thousand, six hundred thirty-four".