157322857 has 2 divisors, whose sum is σ = 157322858. Its totient is φ = 157322856.

The previous prime is 157322819. The next prime is 157322887. The reversal of 157322857 is 758223751.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150332121 + 6990736 = 12261^2 + 2644^2 .

It is a cyclic number.

It is not a de Polignac number, because 157322857 - 2⁷ = 157322729 is a prime.

It is not a weakly prime, because it can be changed into another prime (157322887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78661428 + 78661429.

It is an arithmetic number, because the mean of its divisors is an integer number (78661429).

Almost surely, 2^157322857 is an apocalyptic number.

It is an amenable number.

157322857 is a deficient number, since it is larger than the sum of its proper divisors (1).

157322857 is an equidigital number, since it uses as much as digits as its factorization.

157322857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 40.

The square root of 157322857 is about 12542.8408664066. The cubic root of 157322857 is about 539.8386086051.

The spelling of 157322857 in words is "one hundred fifty-seven million, three hundred twenty-two thousand, eight hundred fifty-seven".