652565239 has 2 divisors, whose sum is σ = 652565240. Its totient is φ = 652565238.

The previous prime is 652565237. The next prime is 652565257. The reversal of 652565239 is 932565256.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 652565239 - 2¹ = 652565237 is a prime.

It is a super-2 number, since 2×652565239² = 851682782302254242, which contains 22 as substring.

Together with 652565237, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 652565195 and 652565204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (652565237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326282619 + 326282620.

It is an arithmetic number, because the mean of its divisors is an integer number (326282620).

Almost surely, 2^652565239 is an apocalyptic number.

652565239 is a deficient number, since it is larger than the sum of its proper divisors (1).

652565239 is an equidigital number, since it uses as much as digits as its factorization.

652565239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 486000, while the sum is 43.

The square root of 652565239 is about 25545.3565056352. The cubic root of 652565239 is about 867.3771533033.

The spelling of 652565239 in words is "six hundred fifty-two million, five hundred sixty-five thousand, two hundred thirty-nine".