157122297 has 6 divisors (see below), whose sum is σ = 226954442. Its totient is φ = 104748192.

The previous prime is 157122289. The next prime is 157122307. The reversal of 157122297 is 792221751.

It can be written as a sum of positive squares in only one way, i.e., 144865296 + 12257001 = 12036^2 + 3501^2 .

It is not a de Polignac number, because 157122297 - 2³ = 157122289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157122227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8729008 + ... + 8729025.

Almost surely, 2^157122297 is an apocalyptic number.

It is an amenable number.

157122297 is a deficient number, since it is larger than the sum of its proper divisors (69832145).

157122297 is a wasteful number, since it uses less digits than its factorization.

157122297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17458039 (or 17458036 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 157122297 is about 12534.8433177284. The cubic root of 157122297 is about 539.6091101189.

The spelling of 157122297 in words is "one hundred fifty-seven million, one hundred twenty-two thousand, two hundred ninety-seven".