56560220 has 24 divisors (see below), whose sum is σ = 123941664. Its totient is φ = 21640256.

The previous prime is 56560219. The next prime is 56560249. The reversal of 56560220 is 2206565.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 56560220.

It is a congruent number.

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, 61019 + ... + 61938.

It is an arithmetic number, because the mean of its divisors is an integer number (5164236).

Almost surely, 2^56560220 is an apocalyptic number.

It is an amenable number.

56560220 is an abundant number, since it is smaller than the sum of its proper divisors (67381444).

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

56560220 is a wasteful number, since it uses less digits than its factorization.

56560220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122989 (or 122987 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 56560220 is about 7520.6528971892. The cubic root of 56560220 is about 383.8577942043.

Adding to 56560220 its reverse (2206565), we get a palindrome (58766785).

The spelling of 56560220 in words is "fifty-six million, five hundred sixty thousand, two hundred twenty".