56881807 has 8 divisors (see below), whose sum is σ = 58803840. Its totient is φ = 54965280.

The previous prime is 56881787. The next prime is 56881831. The reversal of 56881807 is 70818865.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56881807 - 2⁷ = 56881679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56881837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37353 + ... + 38845.

It is an arithmetic number, because the mean of its divisors is an integer number (7350480).

Almost surely, 2^56881807 is an apocalyptic number.

56881807 is a deficient number, since it is larger than the sum of its proper divisors (1922033).

56881807 is a wasteful number, since it uses less digits than its factorization.

56881807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753.

The product of its (nonzero) digits is 107520, while the sum is 43.

The square root of 56881807 is about 7542.0028507022. The cubic root of 56881807 is about 384.5839256105.

Subtracting from 56881807 its sum of digits (43), we obtain a square (56881764 = 7542²).

The spelling of 56881807 in words is "fifty-six million, eight hundred eighty-one thousand, eight hundred seven".