52521624 has 48 divisors (see below), whose sum is σ = 149736600. Its totient is φ = 16585344.

The previous prime is 52521577. The next prime is 52521631. The reversal of 52521624 is 42612525.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 17829 + ... + 20564.

Almost surely, 2^52521624 is an apocalyptic number.

It is an amenable number.

52521624 is an abundant number, since it is smaller than the sum of its proper divisors (97214976).

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

52521624 is a wasteful number, since it uses less digits than its factorization.

52521624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38424 (or 38417 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 52521624 is about 7247.1804172381. The cubic root of 52521624 is about 374.4950216302.

Subtracting from 52521624 its reverse (42612525), we obtain a palindrome (9909099).

The spelling of 52521624 in words is "fifty-two million, five hundred twenty-one thousand, six hundred twenty-four".