252318157 has 16 divisors (see below), whose sum is σ = 326892160. Its totient is φ = 189127872.

The previous prime is 252318151. The next prime is 252318169. The reversal of 252318157 is 751813252.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252318157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252318151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71238 + ... + 74695.

It is an arithmetic number, because the mean of its divisors is an integer number (20430760).

Almost surely, 2^252318157 is an apocalyptic number.

It is an amenable number.

252318157 is a deficient number, since it is larger than the sum of its proper divisors (74574003).

252318157 is a wasteful number, since it uses less digits than its factorization.

252318157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145972.

The product of its digits is 16800, while the sum is 34.

The square root of 252318157 is about 15884.5257090037. The cubic root of 252318157 is about 631.9016672908.

The spelling of 252318157 in words is "two hundred fifty-two million, three hundred eighteen thousand, one hundred fifty-seven".