252279865 has 4 divisors (see below), whose sum is σ = 302735844. Its totient is φ = 201823888.

The previous prime is 252279823. The next prime is 252279869. The reversal of 252279865 is 568972252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 200165904 + 52113961 = 14148^2 + 7219^2 .

It is a cyclic number.

It is not a de Polignac number, because 252279865 - 2¹⁹ = 251755577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252279869) 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, 25227982 + ... + 25227991.

It is an arithmetic number, because the mean of its divisors is an integer number (75683961).

Almost surely, 2^252279865 is an apocalyptic number.

It is an amenable number.

252279865 is a deficient number, since it is larger than the sum of its proper divisors (50455979).

252279865 is an equidigital number, since it uses as much as digits as its factorization.

252279865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50455978.

The product of its digits is 604800, while the sum is 46.

The square root of 252279865 is about 15883.3203392742. The cubic root of 252279865 is about 631.8696997106.

The spelling of 252279865 in words is "two hundred fifty-two million, two hundred seventy-nine thousand, eight hundred sixty-five".