252291771 has 18 divisors (see below), whose sum is σ = 368666220. Its totient is φ = 166257696.

The previous prime is 252291763. The next prime is 252291773. The reversal of 252291771 is 177192252.

It is not a de Polignac number, because 252291771 - 2³ = 252291763 is a prime.

It is a super-2 number, since 2×252291771² = 127302275428632882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (252291773) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 69520 + ... + 73058.

Almost surely, 2^252291771 is an apocalyptic number.

252291771 is a deficient number, since it is larger than the sum of its proper divisors (116374449).

252291771 is an equidigital number, since it uses as much as digits as its factorization.

252291771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3723 (or 3631 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 252291771 is about 15883.6951305419. The cubic root of 252291771 is about 631.8796396270.

It can be divided in two parts, 25229 and 1771, that added together give a cube (27000 = 30³).

The spelling of 252291771 in words is "two hundred fifty-two million, two hundred ninety-one thousand, seven hundred seventy-one".