157138337 has 2 divisors, whose sum is σ = 157138338. Its totient is φ = 157138336.

The previous prime is 157138321. The next prime is 157138427. The reversal of 157138337 is 733831751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131423296 + 25715041 = 11464^2 + 5071^2 .

It is a cyclic number.

It is not a de Polignac number, because 157138337 - 2⁴ = 157138321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157138337.

It is not a weakly prime, because it can be changed into another prime (157138307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78569168 + 78569169.

It is an arithmetic number, because the mean of its divisors is an integer number (78569169).

Almost surely, 2^157138337 is an apocalyptic number.

It is an amenable number.

157138337 is a deficient number, since it is larger than the sum of its proper divisors (1).

157138337 is an equidigital number, since it uses as much as digits as its factorization.

157138337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 157138337 is about 12535.4831179337. The cubic root of 157138337 is about 539.6274716877.

The spelling of 157138337 in words is "one hundred fifty-seven million, one hundred thirty-eight thousand, three hundred thirty-seven".