252661404 has 24 divisors (see below), whose sum is σ = 589832208. Its totient is φ = 84179200.

The previous prime is 252661399. The next prime is 252661433. The reversal of 252661404 is 404166252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29854 + ... + 37370.

It is an arithmetic number, because the mean of its divisors is an integer number (24576342).

Almost surely, 2^252661404 is an apocalyptic number.

It is an amenable number.

252661404 is an abundant number, since it is smaller than the sum of its proper divisors (337170804).

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

252661404 is a wasteful number, since it uses less digits than its factorization.

252661404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10325 (or 10323 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 252661404 is about 15895.3264829635. The cubic root of 252661404 is about 632.1880782705.

The spelling of 252661404 in words is "two hundred fifty-two million, six hundred sixty-one thousand, four hundred four".