52756920 has 160 divisors (see below), whose sum is σ = 186872400. Its totient is φ = 13312512.

The previous prime is 52756903. The next prime is 52756927. The reversal of 52756920 is 2965725.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52756927) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 61132 + ... + 61988.

Almost surely, 2^52756920 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 52756920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93436200).

52756920 is an abundant number, since it is smaller than the sum of its proper divisors (134115480).

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

52756920 is a wasteful number, since it uses less digits than its factorization.

52756920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899 (or 886 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 52756920 is about 7263.3958999906. The cubic root of 52756920 is about 375.0534323863.

The spelling of 52756920 in words is "fifty-two million, seven hundred fifty-six thousand, nine hundred twenty".