52521339 has 16 divisors (see below), whose sum is σ = 79385600. Its totient is φ = 30619296.

The previous prime is 52521319. The next prime is 52521353. The reversal of 52521339 is 93312525.

It is not a de Polignac number, because 52521339 - 2⁸ = 52521083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52521319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34699 + ... + 36180.

It is an arithmetic number, because the mean of its divisors is an integer number (4961600).

Almost surely, 2^52521339 is an apocalyptic number.

52521339 is a deficient number, since it is larger than the sum of its proper divisors (26864261).

52521339 is a wasteful number, since it uses less digits than its factorization.

52521339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70914.

The product of its digits is 8100, while the sum is 30.

The square root of 52521339 is about 7247.1607543920. The cubic root of 52521339 is about 374.4943442503.

The spelling of 52521339 in words is "fifty-two million, five hundred twenty-one thousand, three hundred thirty-nine".