157715157 has 4 divisors (see below), whose sum is σ = 210286880. Its totient is φ = 105143436.

The previous prime is 157715153. The next prime is 157715179. The reversal of 157715157 is 751517751.

157715157 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 157715157 - 2² = 157715153 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 (157715153) 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, 26285857 + ... + 26285862.

It is an arithmetic number, because the mean of its divisors is an integer number (52571720).

Almost surely, 2^157715157 is an apocalyptic number.

It is an amenable number.

157715157 is a deficient number, since it is larger than the sum of its proper divisors (52571723).

157715157 is an equidigital number, since it uses as much as digits as its factorization.

157715157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52571722.

The product of its digits is 42875, while the sum is 39.

The square root of 157715157 is about 12558.4695325505. The cubic root of 157715157 is about 540.2869496861.

The spelling of 157715157 in words is "one hundred fifty-seven million, seven hundred fifteen thousand, one hundred fifty-seven".