56520756 has 36 divisors (see below), whose sum is σ = 146736772. Its totient is φ = 18330624.

The previous prime is 56520749. The next prime is 56520799. The reversal of 56520756 is 65702565.

56520756 is a `hidden beast` number, since 565 + 20 + 75 + 6 = 666.

56520756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 42458256 + 14062500 = 6516^2 + 3750^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 56520756.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19885 + ... + 22548.

Almost surely, 2^56520756 is an apocalyptic number.

It is an amenable number.

56520756 is an abundant number, since it is smaller than the sum of its proper divisors (90216016).

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

56520756 is a wasteful number, since it uses less digits than its factorization.

56520756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42480 (or 42475 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 56520756 is about 7518.0287309906. The cubic root of 56520756 is about 383.7684965284.

It can be divided in two parts, 565 and 20756, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 56520756 in words is "fifty-six million, five hundred twenty thousand, seven hundred fifty-six".