252231165 has 20 divisors (see below), whose sum is σ = 452148444. Its totient is φ = 134523072.

The previous prime is 252231151. The next prime is 252231173. The reversal of 252231165 is 561132252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 190357209 + 61873956 = 13797^2 + 7866^2 .

It is not a de Polignac number, because 252231165 - 2¹⁰ = 252230141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 310992 + ... + 311801.

Almost surely, 2^252231165 is an apocalyptic number.

It is an amenable number.

252231165 is a deficient number, since it is larger than the sum of its proper divisors (199917279).

252231165 is an equidigital number, since it uses as much as digits as its factorization.

252231165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622810 (or 622801 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 252231165 is about 15881.7872105125. The cubic root of 252231165 is about 631.8290384729.

The spelling of 252231165 in words is "two hundred fifty-two million, two hundred thirty-one thousand, one hundred sixty-five".