252408897 has 12 divisors (see below), whose sum is σ = 392636244. Its totient is φ = 155328480.

The previous prime is 252408889. The next prime is 252408907. The reversal of 252408897 is 798804252.

It can be written as a sum of positive squares in 2 ways, for example, as 31708161 + 220700736 = 5631^2 + 14856^2 .

It is not a de Polignac number, because 252408897 - 2³ = 252408889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252458897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1078554 + ... + 1078787.

It is an arithmetic number, because the mean of its divisors is an integer number (32719687).

Almost surely, 2^252408897 is an apocalyptic number.

It is an amenable number.

252408897 is a deficient number, since it is larger than the sum of its proper divisors (140227347).

252408897 is a wasteful number, since it uses less digits than its factorization.

252408897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157360 (or 2157357 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 252408897 is about 15887.3816911409. The cubic root of 252408897 is about 631.9774074937.

The spelling of 252408897 in words is "two hundred fifty-two million, four hundred eight thousand, eight hundred ninety-seven".