252830639 has 2 divisors, whose sum is σ = 252830640. Its totient is φ = 252830638.

The previous prime is 252830581. The next prime is 252830653. The reversal of 252830639 is 936038252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 252830639 - 2¹² = 252826543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252830339) 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, 126415319 + 126415320.

It is an arithmetic number, because the mean of its divisors is an integer number (126415320).

Almost surely, 2^252830639 is an apocalyptic number.

252830639 is a deficient number, since it is larger than the sum of its proper divisors (1).

252830639 is an equidigital number, since it uses as much as digits as its factorization.

252830639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 252830639 is about 15900.6490119114. The cubic root of 252830639 is about 632.3291952876.

The spelling of 252830639 in words is "two hundred fifty-two million, eight hundred thirty thousand, six hundred thirty-nine".