252631465 has 8 divisors (see below), whose sum is σ = 307311048. Its totient is φ = 199336320.

The previous prime is 252631433. The next prime is 252631469. The reversal of 252631465 is 564136252.

It can be written as a sum of positive squares in 4 ways, for example, as 95981209 + 156650256 = 9797^2 + 12516^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 252631465 - 2⁵ = 252631433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252631465.

It is not an unprimeable number, because it can be changed into a prime (252631469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345706 + ... + 346435.

It is an arithmetic number, because the mean of its divisors is an integer number (38413881).

Almost surely, 2^252631465 is an apocalyptic number.

It is an amenable number.

252631465 is a deficient number, since it is larger than the sum of its proper divisors (54679583).

252631465 is an equidigital number, since it uses as much as digits as its factorization.

252631465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692219.

The product of its digits is 43200, while the sum is 34.

The square root of 252631465 is about 15894.3847002644. The cubic root of 252631465 is about 632.1631070030.

The spelling of 252631465 in words is "two hundred fifty-two million, six hundred thirty-one thousand, four hundred sixty-five".