252393161 has 4 divisors (see below), whose sum is σ = 252599424. Its totient is φ = 252186900.

The previous prime is 252393151. The next prime is 252393179. The reversal of 252393161 is 161393252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252393161 - 2¹⁰ = 252392137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252393121) 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, 101285 + ... + 103746.

It is an arithmetic number, because the mean of its divisors is an integer number (63149856).

Almost surely, 2^252393161 is an apocalyptic number.

It is an amenable number.

252393161 is a deficient number, since it is larger than the sum of its proper divisors (206263).

252393161 is a wasteful number, since it uses less digits than its factorization.

252393161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206262.

The product of its digits is 9720, while the sum is 32.

The square root of 252393161 is about 15886.8864476335. The cubic root of 252393161 is about 631.9642740380.

Subtracting from 252393161 its reverse (161393252), we obtain a palindrome (90999909).

The spelling of 252393161 in words is "two hundred fifty-two million, three hundred ninety-three thousand, one hundred sixty-one".