157601971 has 2 divisors, whose sum is σ = 157601972. Its totient is φ = 157601970.

The previous prime is 157601933. The next prime is 157601993. The reversal of 157601971 is 179106751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157601971 - 2²⁷ = 23384243 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157601971.

It is not a weakly prime, because it can be changed into another prime (157601471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78800985 + 78800986.

It is an arithmetic number, because the mean of its divisors is an integer number (78800986).

Almost surely, 2^157601971 is an apocalyptic number.

157601971 is a deficient number, since it is larger than the sum of its proper divisors (1).

157601971 is an equidigital number, since it uses as much as digits as its factorization.

157601971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13230, while the sum is 37.

The square root of 157601971 is about 12553.9623625372. The cubic root of 157601971 is about 540.1576711506.

The spelling of 157601971 in words is "one hundred fifty-seven million, six hundred one thousand, nine hundred seventy-one".