252444 has 24 divisors (see below), whose sum is σ = 597520. Its totient is φ = 82944.

The previous prime is 252443. The next prime is 252449. The reversal of 252444 is 444252.

It is a super-3 number, since 3×252444³ = 48263233351033152, which contains 333 as substring.

252444 is a modest number, since divided by 444 gives 252 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 252444.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 252444.

It is not an unprimeable number, because it can be changed into a prime (252443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1212 + ... + 1404.

2²⁵²⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

252444 is an abundant number, since it is smaller than the sum of its proper divisors (345076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252444 is a wasteful number, since it uses less digits than its factorization.

252444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309 (or 307 counting only the distinct ones).

The product of its digits is 1280, while the sum is 21.

The square root of 252444 is about 502.4380558835. The cubic root of 252444 is about 63.2006702915.

Adding to 252444 its reverse (444252), we get a palindrome (696696).

It can be divided in two parts, 252 and 444, that added together give a palindrome (696).

The spelling of 252444 in words is "two hundred fifty-two thousand, four hundred forty-four".