56820560 has 20 divisors (see below), whose sum is σ = 132107988. Its totient is φ = 22728192.

The previous prime is 56820553. The next prime is 56820571. The reversal of 56820560 is 6502865.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10471696 + 46348864 = 3236^2 + 6808^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355049 + ... + 355208.

Almost surely, 2^56820560 is an apocalyptic number.

It is an amenable number.

56820560 is an abundant number, since it is smaller than the sum of its proper divisors (75287428).

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

56820560 is a wasteful number, since it uses less digits than its factorization.

56820560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710270 (or 710264 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 56820560 is about 7537.9413635289. The cubic root of 56820560 is about 384.4458435531.

The spelling of 56820560 in words is "fifty-six million, eight hundred twenty thousand, five hundred sixty".