56501172 has 96 divisors (see below), whose sum is σ = 180320000. Its totient is φ = 14898816.

The previous prime is 56501143. The next prime is 56501213. The reversal of 56501172 is 27110565.

56501172 is a `hidden beast` number, since 5 + 650 + 1 + 1 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6954 + ... + 12702.

Almost surely, 2^56501172 is an apocalyptic number.

56501172 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56501172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90160000).

56501172 is an abundant number, since it is smaller than the sum of its proper divisors (123818828).

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

56501172 is a wasteful number, since it uses less digits than its factorization.

56501172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5782 (or 5774 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 56501172 is about 7516.7261490625. The cubic root of 56501172 is about 383.7241671470.

The spelling of 56501172 in words is "fifty-six million, five hundred one thousand, one hundred seventy-two".