157240271 has 2 divisors, whose sum is σ = 157240272. Its totient is φ = 157240270.

The previous prime is 157240253. The next prime is 157240273. The reversal of 157240271 is 172042751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157240271 - 2¹⁴ = 157223887 is a prime.

Together with 157240273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157240273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78620135 + 78620136.

It is an arithmetic number, because the mean of its divisors is an integer number (78620136).

Almost surely, 2^157240271 is an apocalyptic number.

157240271 is a deficient number, since it is larger than the sum of its proper divisors (1).

157240271 is an equidigital number, since it uses as much as digits as its factorization.

157240271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 157240271 is about 12539.5482773503. The cubic root of 157240271 is about 539.7441300369.

The spelling of 157240271 in words is "one hundred fifty-seven million, two hundred forty thousand, two hundred seventy-one".