56613788 has 48 divisors (see below), whose sum is σ = 124099584. Its totient is φ = 21954240.

The previous prime is 56613769. The next prime is 56613827. The reversal of 56613788 is 88731665.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122045 + ... + 122507.

It is an arithmetic number, because the mean of its divisors is an integer number (2585408).

Almost surely, 2^56613788 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 56613788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62049792).

56613788 is an abundant number, since it is smaller than the sum of its proper divisors (67485796).

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

56613788 is a wasteful number, since it uses less digits than its factorization.

56613788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882 (or 880 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 56613788 is about 7524.2134472648. The cubic root of 56613788 is about 383.9789394555.

It can be divided in two parts, 5661 and 3788, that added together give a palindrome (9449).

The spelling of 56613788 in words is "fifty-six million, six hundred thirteen thousand, seven hundred eighty-eight".