157159997 has 2 divisors, whose sum is σ = 157159998. Its totient is φ = 157159996.

The previous prime is 157159967. The next prime is 157160023. The reversal of 157159997 is 799951751.

157159997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153115876 + 4044121 = 12374^2 + 2011^2 .

It is a cyclic number.

It is not a de Polignac number, because 157159997 - 2¹⁰ = 157158973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157159967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78579998 + 78579999.

It is an arithmetic number, because the mean of its divisors is an integer number (78579999).

Almost surely, 2^157159997 is an apocalyptic number.

It is an amenable number.

157159997 is a deficient number, since it is larger than the sum of its proper divisors (1).

157159997 is an equidigital number, since it uses as much as digits as its factorization.

157159997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 893025, while the sum is 53.

The square root of 157159997 is about 12536.3470357198. The cubic root of 157159997 is about 539.6522646912.

The spelling of 157159997 in words is "one hundred fifty-seven million, one hundred fifty-nine thousand, nine hundred ninety-seven".