56559720 has 96 divisors (see below), whose sum is σ = 197402400. Its totient is φ = 12926592.

The previous prime is 56559719. The next prime is 56559739. The reversal of 56559720 is 2795565.

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, 1071 + ... + 10689.

It is an arithmetic number, because the mean of its divisors is an integer number (2056275).

Almost surely, 2^56559720 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 56559720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98701200).

56559720 is an abundant number, since it is smaller than the sum of its proper divisors (140842680).

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

56559720 is a wasteful number, since it uses less digits than its factorization.

56559720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9647 (or 9636 counting only the distinct ones).

The product of its (nonzero) digits is 94500, while the sum is 39.

The square root of 56559720 is about 7520.6196553210. The cubic root of 56559720 is about 383.8566630827.

The spelling of 56559720 in words is "fifty-six million, five hundred fifty-nine thousand, seven hundred twenty".