157320871 has 2 divisors, whose sum is σ = 157320872. Its totient is φ = 157320870.

The previous prime is 157320857. The next prime is 157320883. The reversal of 157320871 is 178023751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157320871 - 2⁷ = 157320743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157320571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78660435 + 78660436.

It is an arithmetic number, because the mean of its divisors is an integer number (78660436).

Almost surely, 2^157320871 is an apocalyptic number.

157320871 is a deficient number, since it is larger than the sum of its proper divisors (1).

157320871 is an equidigital number, since it uses as much as digits as its factorization.

157320871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 157320871 is about 12542.7616974891. The cubic root of 157320871 is about 539.8363370047.

The spelling of 157320871 in words is "one hundred fifty-seven million, three hundred twenty thousand, eight hundred seventy-one".