252116157 has 4 divisors (see below), whose sum is σ = 336154880. Its totient is φ = 168077436.

The previous prime is 252116153. The next prime is 252116201. The reversal of 252116157 is 751611252.

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 not a de Polignac number, because 252116157 - 2² = 252116153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252116153) 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, 42019357 + ... + 42019362.

It is an arithmetic number, because the mean of its divisors is an integer number (84038720).

Almost surely, 2^252116157 is an apocalyptic number.

It is an amenable number.

252116157 is a deficient number, since it is larger than the sum of its proper divisors (84038723).

252116157 is an equidigital number, since it uses as much as digits as its factorization.

252116157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84038722.

The product of its digits is 4200, while the sum is 30.

The square root of 252116157 is about 15878.1660464929. The cubic root of 252116157 is about 631.7329937182.

The spelling of 252116157 in words is "two hundred fifty-two million, one hundred sixteen thousand, one hundred fifty-seven".