252207617 has 4 divisors (see below), whose sum is σ = 252485376. Its totient is φ = 251929860.

The previous prime is 252207589. The next prime is 252207731. The reversal of 252207617 is 716702252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252207617 - 2¹⁰ = 252206593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252207517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137513 + ... + 139334.

It is an arithmetic number, because the mean of its divisors is an integer number (63121344).

Almost surely, 2^252207617 is an apocalyptic number.

It is an amenable number.

252207617 is a deficient number, since it is larger than the sum of its proper divisors (277759).

252207617 is an equidigital number, since it uses as much as digits as its factorization.

252207617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277758.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 252207617 is about 15881.0458408758. The cubic root of 252207617 is about 631.8093755931.

Adding to 252207617 its reverse (716702252), we get a palindrome (968909869).

The spelling of 252207617 in words is "two hundred fifty-two million, two hundred seven thousand, six hundred seventeen".