56161072 has 20 divisors (see below), whose sum is σ = 118704456. Its totient is φ = 25527680.

The previous prime is 56161069. The next prime is 56161087. The reversal of 56161072 is 27016165.

56161072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 56161072.

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 3 ways as a sum of consecutive naturals, for example, 159373 + ... + 159724.

Almost surely, 2^56161072 is an apocalyptic number.

It is an amenable number.

56161072 is an abundant number, since it is smaller than the sum of its proper divisors (62543384).

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

56161072 is a wasteful number, since it uses less digits than its factorization.

56161072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319116 (or 319110 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 56161072 is about 7494.0691216455. The cubic root of 56161072 is about 382.9526945417.

The spelling of 56161072 in words is "fifty-six million, one hundred sixty-one thousand, seventy-two".