56561008 has 40 divisors (see below), whose sum is σ = 126483968. Its totient is φ = 24000192.

The previous prime is 56561003. The next prime is 56561027. The reversal of 56561008 is 80016565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56561003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9085 + ... + 13987.

Almost surely, 2^56561008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56561008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63241984).

56561008 is an abundant number, since it is smaller than the sum of its proper divisors (69922960).

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

56561008 is a wasteful number, since it uses less digits than its factorization.

56561008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5021 (or 5015 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 56561008 is about 7520.7052860752. The cubic root of 56561008 is about 383.8595768384.

The spelling of 56561008 in words is "fifty-six million, five hundred sixty-one thousand, eight".