56913816 has 48 divisors (see below), whose sum is σ = 150190200. Its totient is φ = 17970048.

The previous prime is 56913763. The next prime is 56913817. The reversal of 56913816 is 61831965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56913817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5380 + ... + 11948.

Almost surely, 2^56913816 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 56913816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75095100).

56913816 is an abundant number, since it is smaller than the sum of its proper divisors (93276384).

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

56913816 is a wasteful number, since it uses less digits than its factorization.

56913816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6616 (or 6593 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 56913816 is about 7544.1246013040. The cubic root of 56913816 is about 384.6560508304.

The spelling of 56913816 in words is "fifty-six million, nine hundred thirteen thousand, eight hundred sixteen".