252534139 has 24 divisors (see below), whose sum is σ = 307081040. Its totient is φ = 206141760.

The previous prime is 252534109. The next prime is 252534151. The reversal of 252534139 is 931435252.

It is not a de Polignac number, because 252534139 - 2⁷ = 252534011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252534109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56032 + ... + 60370.

Almost surely, 2^252534139 is an apocalyptic number.

252534139 is a deficient number, since it is larger than the sum of its proper divisors (54546901).

252534139 is a wasteful number, since it uses less digits than its factorization.

252534139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4411 (or 4400 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 252534139 is about 15891.3227580337. The cubic root of 252534139 is about 632.0819165237.

It can be divided in two parts, 25253 and 4139, that added together give a palindrome (29392).

The spelling of 252534139 in words is "two hundred fifty-two million, five hundred thirty-four thousand, one hundred thirty-nine".