56559940 has 24 divisors (see below), whose sum is σ = 119228760. Its totient is φ = 22537728.

The previous prime is 56559931. The next prime is 56559973. The reversal of 56559940 is 4995565.

It can be written as a sum of positive squares in 4 ways, for example, as 5837056 + 50722884 = 2416^2 + 7122^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124 + ... + 10636.

It is an arithmetic number, because the mean of its divisors is an integer number (4967865).

Almost surely, 2^56559940 is an apocalyptic number.

It is an amenable number.

56559940 is an abundant number, since it is smaller than the sum of its proper divisors (62668820).

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

56559940 is a wasteful number, since it uses less digits than its factorization.

56559940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10791 (or 10789 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 43.

The square root of 56559940 is about 7520.6342817611. The cubic root of 56559940 is about 383.8571607770.

The spelling of 56559940 in words is "fifty-six million, five hundred fifty-nine thousand, nine hundred forty".