56181888 has 96 divisors (see below), whose sum is σ = 184791360. Its totient is φ = 16049664.

The previous prime is 56181883. The next prime is 56181899. The reversal of 56181888 is 88818165.

It is a happy number.

56181888 is a `hidden beast` number, since 561 + 8 + 1 + 8 + 88 = 666.

It is a Cunningham number, because it is equal to 383³+1.

It is a tau number, because it is divible by the number of its divisors (96).

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (56181883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4581 + ... + 11547.

It is an arithmetic number, because the mean of its divisors is an integer number (1924910).

Almost surely, 2^56181888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56181888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92395680).

56181888 is an abundant number, since it is smaller than the sum of its proper divisors (128609472).

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

56181888 is a wasteful number, since it uses less digits than its factorization.

56181888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6994 (or 6979 counting only the distinct ones).

The product of its digits is 122880, while the sum is 45.

The square root of 56181888 is about 7495.4578245762. The cubic root of 56181888 is about 383.0000022724. Note that the first 5 decimals are identical.

The spelling of 56181888 in words is "fifty-six million, one hundred eighty-one thousand, eight hundred eighty-eight".