252565739 has 2 divisors, whose sum is σ = 252565740. Its totient is φ = 252565738.

The previous prime is 252565721. The next prime is 252565759. The reversal of 252565739 is 937565252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252565739 - 2⁸ = 252565483 is a prime.

It is a super-3 number, since 3×252565739³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252565739.

It is not a weakly prime, because it can be changed into another prime (252565759) 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, 126282869 + 126282870.

It is an arithmetic number, because the mean of its divisors is an integer number (126282870).

Almost surely, 2^252565739 is an apocalyptic number.

252565739 is a deficient number, since it is larger than the sum of its proper divisors (1).

252565739 is an equidigital number, since it uses as much as digits as its factorization.

252565739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 567000, while the sum is 44.

The square root of 252565739 is about 15892.3169802266. The cubic root of 252565739 is about 632.1082798972.

The spelling of 252565739 in words is "two hundred fifty-two million, five hundred sixty-five thousand, seven hundred thirty-nine".