56784520 has 32 divisors (see below), whose sum is σ = 137594520. Its totient is φ = 20966400.

The previous prime is 56784503. The next prime is 56784547. The reversal of 56784520 is 2548765.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 45400644 + 11383876 = 6738^2 + 3374^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 56784520.

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, 54081 + ... + 55120.

Almost surely, 2^56784520 is an apocalyptic number.

It is an amenable number.

56784520 is an abundant number, since it is smaller than the sum of its proper divisors (80810000).

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

56784520 is a wasteful number, since it uses less digits than its factorization.

56784520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109225 (or 109221 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 56784520 is about 7535.5504112175. The cubic root of 56784520 is about 384.3645445853.

It can be divided in two parts, 567845 and 20, that multiplied together give a square (11356900 = 3370²).

The spelling of 56784520 in words is "fifty-six million, seven hundred eighty-four thousand, five hundred twenty".