56881808 has 10 divisors (see below), whose sum is σ = 110208534. Its totient is φ = 28440896.

The previous prime is 56881787. The next prime is 56881831. The reversal of 56881808 is 80818865.

56881808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 34904464 + 21977344 = 5908^2 + 4688^2 .

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 as a sum of consecutive naturals, namely, 1777541 + ... + 1777572.

Almost surely, 2^56881808 is an apocalyptic number.

It is an amenable number.

56881808 is a deficient number, since it is larger than the sum of its proper divisors (53326726).

56881808 is a wasteful number, since it uses less digits than its factorization.

56881808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3555121 (or 3555115 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 44.

The square root of 56881808 is about 7542.0029169976. The cubic root of 56881808 is about 384.5839278642.

Subtracting from 56881808 its sum of digits (44), we obtain a square (56881764 = 7542²).

The spelling of 56881808 in words is "fifty-six million, eight hundred eighty-one thousand, eight hundred eight".