252815231 has 2 divisors, whose sum is σ = 252815232. Its totient is φ = 252815230.

The previous prime is 252815207. The next prime is 252815257. The reversal of 252815231 is 132518252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252815231 - 2²² = 248620927 is a prime.

It is a super-2 number, since 2×252815231² = 127831082051166722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 252815194 and 252815203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252815201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126407615 + 126407616.

It is an arithmetic number, because the mean of its divisors is an integer number (126407616).

Almost surely, 2^252815231 is an apocalyptic number.

252815231 is a deficient number, since it is larger than the sum of its proper divisors (1).

252815231 is an equidigital number, since it uses as much as digits as its factorization.

252815231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 29.

The square root of 252815231 is about 15900.1644960044. The cubic root of 252815231 is about 632.3163498954.

The spelling of 252815231 in words is "two hundred fifty-two million, eight hundred fifteen thousand, two hundred thirty-one".