252570157 has 6 divisors (see below), whose sum is σ = 293806158. Its totient is φ = 216488664.

The previous prime is 252570137. The next prime is 252570161. The reversal of 252570157 is 751075252.

It can be written as a sum of positive squares in only one way, i.e., 229037956 + 23532201 = 15134^2 + 4851^2 .

It is not a de Polignac number, because 252570157 - 2¹⁹ = 252045869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252570137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2577198 + ... + 2577295.

It is an arithmetic number, because the mean of its divisors is an integer number (48967693).

Almost surely, 2^252570157 is an apocalyptic number.

It is an amenable number.

252570157 is a deficient number, since it is larger than the sum of its proper divisors (41236001).

252570157 is an equidigital number, since it uses as much as digits as its factorization.

252570157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5154507 (or 5154500 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 34.

The square root of 252570157 is about 15892.4559776014. The cubic root of 252570157 is about 632.1119655886. Note that the first 3 decimals are identical.

The spelling of 252570157 in words is "two hundred fifty-two million, five hundred seventy thousand, one hundred fifty-seven".