252402539 has 2 divisors, whose sum is σ = 252402540. Its totient is φ = 252402538.

The previous prime is 252402523. The next prime is 252402541. The reversal of 252402539 is 935204252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 252402539 - 2⁴ = 252402523 is a prime.

Together with 252402541, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (252402599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126201269 + 126201270.

It is an arithmetic number, because the mean of its divisors is an integer number (126201270).

Almost surely, 2^252402539 is an apocalyptic number.

252402539 is a deficient number, since it is larger than the sum of its proper divisors (1).

252402539 is an equidigital number, since it uses as much as digits as its factorization.

252402539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 252402539 is about 15887.1815939770. The cubic root of 252402539 is about 631.9721010958.

The spelling of 252402539 in words is "two hundred fifty-two million, four hundred two thousand, five hundred thirty-nine".