56181856 has 24 divisors (see below), whose sum is σ = 111709584. Its totient is φ = 27811200.

The previous prime is 56181817. The next prime is 56181859. The reversal of 56181856 is 65818165.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56181859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5460 + ... + 11923.

It is an arithmetic number, because the mean of its divisors is an integer number (4654566).

Almost surely, 2^56181856 is an apocalyptic number.

It is an amenable number.

56181856 is a deficient number, since it is larger than the sum of its proper divisors (55527728).

56181856 is a wasteful number, since it uses less digits than its factorization.

56181856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17494 (or 17486 counting only the distinct ones).

The product of its digits is 57600, while the sum is 40.

The square root of 56181856 is about 7495.4556899497. The cubic root of 56181856 is about 382.9999295562. Note that the first 4 decimals are identical.

The spelling of 56181856 in words is "fifty-six million, one hundred eighty-one thousand, eight hundred fifty-six".