56811008 has 80 divisors (see below), whose sum is σ = 123300144. Its totient is φ = 26050560.

The previous prime is 56810981. The next prime is 56811011. The reversal of 56811008 is 80011865.

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, 530891 + ... + 530997.

Almost surely, 2^56811008 is an apocalyptic number.

56811008 is the 4352-nd octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56811008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61650072).

56811008 is an abundant number, since it is smaller than the sum of its proper divisors (66489136).

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

56811008 is a wasteful number, since it uses less digits than its factorization.

56811008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 56811008 is about 7537.3077421583. The cubic root of 56811008 is about 384.4242995175.

The spelling of 56811008 in words is "fifty-six million, eight hundred eleven thousand, eight".