252081315 has 20 divisors (see below), whose sum is σ = 451879824. Its totient is φ = 134443152.

The previous prime is 252081307. The next prime is 252081317. The reversal of 252081315 is 513180252.

It is a happy number.

252081315 is a `hidden beast` number, since 2 + 520 + 8 + 131 + 5 = 666.

252081315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 252081315 - 2³ = 252081307 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (252081317) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 310807 + ... + 311616.

Almost surely, 2^252081315 is an apocalyptic number.

252081315 is a deficient number, since it is larger than the sum of its proper divisors (199798509).

252081315 is an equidigital number, since it uses as much as digits as its factorization.

252081315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622440 (or 622431 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 252081315 is about 15877.0688415715. The cubic root of 252081315 is about 631.7038909226.

The spelling of 252081315 in words is "two hundred fifty-two million, eighty-one thousand, three hundred fifteen".