252591239 has 2 divisors, whose sum is σ = 252591240. Its totient is φ = 252591238.

The previous prime is 252591223. The next prime is 252591281. The reversal of 252591239 is 932195252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252591239 - 2⁴ = 252591223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252591289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126295619 + 126295620.

It is an arithmetic number, because the mean of its divisors is an integer number (126295620).

Almost surely, 2^252591239 is an apocalyptic number.

252591239 is a deficient number, since it is larger than the sum of its proper divisors (1).

252591239 is an equidigital number, since it uses as much as digits as its factorization.

252591239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 38.

The square root of 252591239 is about 15893.1192344360. The cubic root of 252591239 is about 632.1295525353.

The spelling of 252591239 in words is "two hundred fifty-two million, five hundred ninety-one thousand, two hundred thirty-nine".