56781576 has 48 divisors (see below), whose sum is σ = 161881200. Its totient is φ = 17930592.

The previous prime is 56781563. The next prime is 56781589. The reversal of 56781576 is 67518765.

56781576 is a `hidden beast` number, since 5 + 6 + 78 + 1 + 576 = 666.

It is an interprime number because it is at equal distance from previous prime (56781563) and next prime (56781589).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19386 + ... + 22121.

It is an arithmetic number, because the mean of its divisors is an integer number (3372525).

Almost surely, 2^56781576 is an apocalyptic number.

It is an amenable number.

56781576 is an abundant number, since it is smaller than the sum of its proper divisors (105099624).

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

56781576 is a wasteful number, since it uses less digits than its factorization.

56781576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41538 (or 41531 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 56781576 is about 7535.3550679447. The cubic root of 56781576 is about 384.3579019957.

The spelling of 56781576 in words is "fifty-six million, seven hundred eighty-one thousand, five hundred seventy-six".