252521144 has 16 divisors (see below), whose sum is σ = 474104400. Its totient is φ = 126093312.

The previous prime is 252521123. The next prime is 252521147. The reversal of 252521144 is 441125252.

252521144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252521147) 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, 14372 + ... + 26675.

It is an arithmetic number, because the mean of its divisors is an integer number (29631525).

Almost surely, 2^252521144 is an apocalyptic number.

It is an amenable number.

252521144 is a deficient number, since it is larger than the sum of its proper divisors (221583256).

252521144 is a wasteful number, since it uses less digits than its factorization.

252521144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41822 (or 41818 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 252521144 is about 15890.9138818383. The cubic root of 252521144 is about 632.0710743653.

Adding to 252521144 its reverse (441125252), we get a palindrome (693646396).

The spelling of 252521144 in words is "two hundred fifty-two million, five hundred twenty-one thousand, one hundred forty-four".