252585817 has 4 divisors (see below), whose sum is σ = 275548176. Its totient is φ = 229623460.

The previous prime is 252585797. The next prime is 252585859. The reversal of 252585817 is 718585252.

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 de Polignac number, because none of the positive numbers 2^k-252585817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252585877) 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, 11481163 + ... + 11481184.

It is an arithmetic number, because the mean of its divisors is an integer number (68887044).

Almost surely, 2^252585817 is an apocalyptic number.

It is an amenable number.

252585817 is a deficient number, since it is larger than the sum of its proper divisors (22962359).

252585817 is a wasteful number, since it uses less digits than its factorization.

252585817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22962358.

The product of its digits is 224000, while the sum is 43.

The square root of 252585817 is about 15892.9486565584. The cubic root of 252585817 is about 632.1250295084.

The spelling of 252585817 in words is "two hundred fifty-two million, five hundred eighty-five thousand, eight hundred seventeen".