52439764 has 48 divisors (see below), whose sum is σ = 105649488. Its totient is φ = 22560768.

The previous prime is 52439729. The next prime is 52439771. The reversal of 52439764 is 46793425.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2624400 + 49815364 = 1620^2 + 7058^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120892 + ... + 121324.

It is an arithmetic number, because the mean of its divisors is an integer number (2201031).

Almost surely, 2^52439764 is an apocalyptic number.

It is an amenable number.

52439764 is an abundant number, since it is smaller than the sum of its proper divisors (53209724).

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

52439764 is a wasteful number, since it uses less digits than its factorization.

52439764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 602 counting only the distinct ones).

The product of its digits is 181440, while the sum is 40.

The square root of 52439764 is about 7241.5305012131. The cubic root of 52439764 is about 374.3003582972.

The spelling of 52439764 in words is "fifty-two million, four hundred thirty-nine thousand, seven hundred sixty-four".