56113720 has 96 divisors (see below), whose sum is σ = 142773120. Its totient is φ = 19710720.

The previous prime is 56113709. The next prime is 56113777. The reversal of 56113720 is 2731165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 951051 + ... + 951109.

It is an arithmetic number, because the mean of its divisors is an integer number (1487220).

Almost surely, 2^56113720 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 56113720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71386560).

56113720 is an abundant number, since it is smaller than the sum of its proper divisors (86659400).

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

56113720 is a wasteful number, since it uses less digits than its factorization.

56113720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 56113720 is about 7490.9091571050. The cubic root of 56113720 is about 382.8450358963.

Adding to 56113720 its reverse (2731165), we get a palindrome (58844885).

The spelling of 56113720 in words is "fifty-six million, one hundred thirteen thousand, seven hundred twenty".