252391293 has 48 divisors (see below), whose sum is σ = 456648192. Its totient is φ = 130500000.

The previous prime is 252391283. The next prime is 252391301. The reversal of 252391293 is 392193252.

252391293 is a `hidden beast` number, since 2 + 523 + 9 + 129 + 3 = 666.

It is not a de Polignac number, because 252391293 - 2⁵ = 252391261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252391283) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 173218 + ... + 174668.

It is an arithmetic number, because the mean of its divisors is an integer number (9513504).

Almost surely, 2^252391293 is an apocalyptic number.

It is an amenable number.

252391293 is a deficient number, since it is larger than the sum of its proper divisors (204256899).

252391293 is a wasteful number, since it uses less digits than its factorization.

252391293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726 (or 1723 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 252391293 is about 15886.8276568987. The cubic root of 252391293 is about 631.9627149464.

The spelling of 252391293 in words is "two hundred fifty-two million, three hundred ninety-one thousand, two hundred ninety-three".