56170872 has 48 divisors (see below), whose sum is σ = 154227840. Its totient is φ = 18465408.

The previous prime is 56170867. The next prime is 56170879. The reversal of 56170872 is 27807165.

56170872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56170872² = 6310333722480768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56170879) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 88 + ... + 10599.

It is an arithmetic number, because the mean of its divisors is an integer number (3213080).

Almost surely, 2^56170872 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 56170872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77113920).

56170872 is an abundant number, since it is smaller than the sum of its proper divisors (98056968).

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

56170872 is a wasteful number, since it uses less digits than its factorization.

56170872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10772 (or 10765 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 56170872 is about 7494.7229435117. The cubic root of 56170872 is about 382.9749680845.

The spelling of 56170872 in words is "fifty-six million, one hundred seventy thousand, eight hundred seventy-two".