56511172 has 24 divisors (see below), whose sum is σ = 100904832. Its totient is φ = 27686400.

The previous prime is 56511163. The next prime is 56511181. The reversal of 56511172 is 27111565.

56511172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (56511163) and next prime (56511181).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 56511172.

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 7 ways as a sum of consecutive naturals, for example, 54297 + ... + 55327.

It is an arithmetic number, because the mean of its divisors is an integer number (4204368).

Almost surely, 2^56511172 is an apocalyptic number.

It is an amenable number.

56511172 is a deficient number, since it is larger than the sum of its proper divisors (44393660).

56511172 is a wasteful number, since it uses less digits than its factorization.

56511172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299 (or 1297 counting only the distinct ones).

The product of its digits is 2100, while the sum is 28.

The square root of 56511172 is about 7517.3913028390. The cubic root of 56511172 is about 383.7468039359.

The spelling of 56511172 in words is "fifty-six million, five hundred eleven thousand, one hundred seventy-two".