157399271 has 2 divisors, whose sum is σ = 157399272. Its totient is φ = 157399270.

The previous prime is 157399267. The next prime is 157399283. The reversal of 157399271 is 172993751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157399271 - 2² = 157399267 is a prime.

It is a super-2 number, since 2×157399271² = 49549061022662882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157399171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78699635 + 78699636.

It is an arithmetic number, because the mean of its divisors is an integer number (78699636).

Almost surely, 2^157399271 is an apocalyptic number.

157399271 is a deficient number, since it is larger than the sum of its proper divisors (1).

157399271 is an equidigital number, since it uses as much as digits as its factorization.

157399271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119070, while the sum is 44.

The square root of 157399271 is about 12545.8866167362. The cubic root of 157399271 is about 539.9259969462.

The spelling of 157399271 in words is "one hundred fifty-seven million, three hundred ninety-nine thousand, two hundred seventy-one".