252972591 has 4 divisors (see below), whose sum is σ = 337296792. Its totient is φ = 168648392.

The previous prime is 252972571. The next prime is 252972611. The reversal of 252972591 is 195279252.

252972591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (252972571) and next prime (252972611).

It is a cyclic number.

It is not a de Polignac number, because 252972591 - 2¹⁵ = 252939823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252972571) 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, 42162096 + ... + 42162101.

It is an arithmetic number, because the mean of its divisors is an integer number (84324198).

Almost surely, 2^252972591 is an apocalyptic number.

252972591 is a deficient number, since it is larger than the sum of its proper divisors (84324201).

252972591 is an equidigital number, since it uses as much as digits as its factorization.

252972591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84324200.

The product of its digits is 113400, while the sum is 42.

The square root of 252972591 is about 15905.1121027172. The cubic root of 252972591 is about 632.4475137541.

The spelling of 252972591 in words is "two hundred fifty-two million, nine hundred seventy-two thousand, five hundred ninety-one".