157922857 has 8 divisors (see below), whose sum is σ = 162217440. Its totient is φ = 153649440.

The previous prime is 157922837. The next prime is 157922861. The reversal of 157922857 is 758229751.

It is a happy number.

157922857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157922857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157922837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10458 + ... + 20620.

It is an arithmetic number, because the mean of its divisors is an integer number (20277180).

Almost surely, 2^157922857 is an apocalyptic number.

It is an amenable number.

157922857 is a deficient number, since it is larger than the sum of its proper divisors (4294583).

157922857 is a wasteful number, since it uses less digits than its factorization.

157922857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10583.

The product of its digits is 352800, while the sum is 46.

The square root of 157922857 is about 12566.7361315498. The cubic root of 157922857 is about 540.5240192162.

The spelling of 157922857 in words is "one hundred fifty-seven million, nine hundred twenty-two thousand, eight hundred fifty-seven".