252558139 has 2 divisors, whose sum is σ = 252558140. Its totient is φ = 252558138.

The previous prime is 252558133. The next prime is 252558149. The reversal of 252558139 is 931855252.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252558139 is a prime.

It is a super-2 number, since 2×252558139² = 127571227150286642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (252558133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126279069 + 126279070.

It is an arithmetic number, because the mean of its divisors is an integer number (126279070).

Almost surely, 2^252558139 is an apocalyptic number.

252558139 is a deficient number, since it is larger than the sum of its proper divisors (1).

252558139 is an equidigital number, since it uses as much as digits as its factorization.

252558139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 40.

The square root of 252558139 is about 15892.0778691775. The cubic root of 252558139 is about 632.1019395399.

The spelling of 252558139 in words is "two hundred fifty-two million, five hundred fifty-eight thousand, one hundred thirty-nine".