52504240 has 20 divisors (see below), whose sum is σ = 122072544. Its totient is φ = 21001664.

The previous prime is 52504219. The next prime is 52504261. The reversal of 52504240 is 4240525.

It is an interprime number because it is at equal distance from previous prime (52504219) and next prime (52504261).

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328072 + ... + 328231.

Almost surely, 2^52504240 is an apocalyptic number.

It is an amenable number.

52504240 is an abundant number, since it is smaller than the sum of its proper divisors (69568304).

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

52504240 is a wasteful number, since it uses less digits than its factorization.

52504240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656316 (or 656310 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 52504240 is about 7245.9809549846. The cubic root of 52504240 is about 374.4536993495.

Adding to 52504240 its reverse (4240525), we get a palindrome (56744765).

The spelling of 52504240 in words is "fifty-two million, five hundred four thousand, two hundred forty".