157992671 has 2 divisors, whose sum is σ = 157992672. Its totient is φ = 157992670.

The previous prime is 157992643. The next prime is 157992673. The reversal of 157992671 is 176299751.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157992671 is a prime.

Together with 157992673, 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 (157992673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78996335 + 78996336.

It is an arithmetic number, because the mean of its divisors is an integer number (78996336).

Almost surely, 2^157992671 is an apocalyptic number.

157992671 is a deficient number, since it is larger than the sum of its proper divisors (1).

157992671 is an equidigital number, since it uses as much as digits as its factorization.

157992671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 238140, while the sum is 47.

The square root of 157992671 is about 12569.5135546289. The cubic root of 157992671 is about 540.6036584891.

The spelling of 157992671 in words is "one hundred fifty-seven million, nine hundred ninety-two thousand, six hundred seventy-one".