56520648 has 96 divisors (see below), whose sum is σ = 164955960. Its totient is φ = 17418240.

The previous prime is 56520647. The next prime is 56520661. The reversal of 56520648 is 84602565.

56520648 is a `hidden beast` number, since 5 + 6 + 5 + 2 + 0 + 648 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 44116164 + 12404484 = 6642^2 + 3522^2 .

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

It is not an unprimeable number, because it can be changed into a prime (56520641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74286 + ... + 75042.

Almost surely, 2^56520648 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 56520648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82477980).

56520648 is an abundant number, since it is smaller than the sum of its proper divisors (108435312).

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

56520648 is a wasteful number, since it uses less digits than its factorization.

56520648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 56520648 is about 7518.0215482532. The cubic root of 56520648 is about 383.7682520930.

The spelling of 56520648 in words is "fifty-six million, five hundred twenty thousand, six hundred forty-eight".