52505520 has 120 divisors (see below), whose sum is σ = 173133264. Its totient is φ = 13160448.

The previous prime is 52505513. The next prime is 52505587. The reversal of 52505520 is 2550525.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68982 + ... + 69738.

Almost surely, 2^52505520 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 52505520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86566632).

52505520 is an abundant number, since it is smaller than the sum of its proper divisors (120627744).

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

52505520 is a wasteful number, since it uses less digits than its factorization.

52505520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807 (or 784 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 52505520 is about 7246.0692792713. The cubic root of 52505520 is about 374.4567422583.

The spelling of 52505520 in words is "fifty-two million, five hundred five thousand, five hundred twenty".