56181912 has 32 divisors (see below), whose sum is σ = 142555200. Its totient is φ = 18447264.

The previous prime is 56181907. The next prime is 56181929. The reversal of 56181912 is 21918165.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 15862 + ... + 19077.

It is an arithmetic number, because the mean of its divisors is an integer number (4454850).

Almost surely, 2^56181912 is an apocalyptic number.

It is an amenable number.

56181912 is an abundant number, since it is smaller than the sum of its proper divisors (86373288).

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

56181912 is a wasteful number, since it uses less digits than its factorization.

56181912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35015 (or 35011 counting only the distinct ones).

The product of its digits is 4320, while the sum is 33.

The square root of 56181912 is about 7495.4594255456. The cubic root of 56181912 is about 383.0000568095. Note that the first 4 decimals are identical.

The spelling of 56181912 in words is "fifty-six million, one hundred eighty-one thousand, nine hundred twelve".