252772169 has 4 divisors (see below), whose sum is σ = 272216196. Its totient is φ = 233328144.

The previous prime is 252772159. The next prime is 252772213. The reversal of 252772169 is 961277252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 129117769 + 123654400 = 11363^2 + 11120^2 .

It is a cyclic number.

It is not a de Polignac number, because 252772169 - 2⁸ = 252771913 is a prime.

It is a super-2 number, since 2×252772169² = 127787538841929122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252772129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9721994 + ... + 9722019.

It is an arithmetic number, because the mean of its divisors is an integer number (68054049).

Almost surely, 2^252772169 is an apocalyptic number.

It is an amenable number.

252772169 is a deficient number, since it is larger than the sum of its proper divisors (19444027).

252772169 is a wasteful number, since it uses less digits than its factorization.

252772169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19444026.

The product of its digits is 105840, while the sum is 41.

The square root of 252772169 is about 15898.8103014031. The cubic root of 252772169 is about 632.2804470575.

The spelling of 252772169 in words is "two hundred fifty-two million, seven hundred seventy-two thousand, one hundred sixty-nine".