52640404 has 12 divisors (see below), whose sum is σ = 92673504. Its totient is φ = 26162264.

The previous prime is 52640389. The next prime is 52640417. The reversal of 52640404 is 40404625.

It is a congruent number.

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, 38734 + ... + 40069.

It is an arithmetic number, because the mean of its divisors is an integer number (7722792).

Almost surely, 2^52640404 is an apocalyptic number.

It is an amenable number.

52640404 is a deficient number, since it is larger than the sum of its proper divisors (40033100).

52640404 is a wasteful number, since it uses less digits than its factorization.

52640404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78974 (or 78972 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 52640404 is about 7255.3707003846. The cubic root of 52640404 is about 374.7771214860. Note that the first 3 decimals are identical.

The spelling of 52640404 in words is "fifty-two million, six hundred forty thousand, four hundred four".