56776520 has 32 divisors (see below), whose sum is σ = 128140920. Its totient is φ = 22640640.

The previous prime is 56776507. The next prime is 56776523. The reversal of 56776520 is 2567765.

It can be written as a sum of positive squares in 4 ways, for example, as 28665316 + 28111204 = 5354^2 + 5302^2 .

It is not an unprimeable number, because it can be changed into a prime (56776523) 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, 12110 + ... + 16130.

Almost surely, 2^56776520 is an apocalyptic number.

It is an amenable number.

56776520 is an abundant number, since it is smaller than the sum of its proper divisors (71364400).

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

56776520 is a wasteful number, since it uses less digits than its factorization.

56776520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4385 (or 4381 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 56776520 is about 7535.0195752898. The cubic root of 56776520 is about 384.3464935345.

The spelling of 56776520 in words is "fifty-six million, seven hundred seventy-six thousand, five hundred twenty".