56481156 has 18 divisors (see below), whose sum is σ = 142771902. Its totient is φ = 18827040.

The previous prime is 56481143. The next prime is 56481179. The reversal of 56481156 is 65118465.

56481156 is a `hidden beast` number, since 5 + 648 + 1 + 1 + 5 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 52794756 + 3686400 = 7266^2 + 1920^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1568921 = 56481156 / (5 + 6 + 4 + 8 + 1 + 1 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 56481156.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 784425 + ... + 784496.

Almost surely, 2^56481156 is an apocalyptic number.

It is an amenable number.

56481156 is an abundant number, since it is smaller than the sum of its proper divisors (86290746).

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

56481156 is a wasteful number, since it uses less digits than its factorization.

56481156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568931 (or 1568926 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 56481156 is about 7515.3946004185. The cubic root of 56481156 is about 383.6788493255.

The spelling of 56481156 in words is "fifty-six million, four hundred eighty-one thousand, one hundred fifty-six".