252401144 has 16 divisors (see below), whose sum is σ = 473422200. Its totient is φ = 126155232.

The previous prime is 252401141. The next prime is 252401173. The reversal of 252401144 is 441104252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252401141) 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, 36059 + ... + 42485.

Almost surely, 2^252401144 is an apocalyptic number.

It is an amenable number.

252401144 is a deficient number, since it is larger than the sum of its proper divisors (221021056).

252401144 is a wasteful number, since it uses less digits than its factorization.

252401144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11342 (or 11338 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 252401144 is about 15887.1376905974. The cubic root of 252401144 is about 631.9709368145.

Adding to 252401144 its reverse (441104252), we get a palindrome (693505396).

The spelling of 252401144 in words is "two hundred fifty-two million, four hundred one thousand, one hundred forty-four".