857291171 has 6 divisors (see below), whose sum is σ = 942311916. Its totient is φ = 779355500.

The previous prime is 857291161. The next prime is 857291177. The reversal of 857291171 is 171192758.

857291171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 857291171 - 2⁶ = 857291107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (857291177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3542405 + ... + 3542646.

It is an arithmetic number, because the mean of its divisors is an integer number (157051986).

Almost surely, 2^857291171 is an apocalyptic number.

857291171 is a deficient number, since it is larger than the sum of its proper divisors (85020745).

857291171 is a wasteful number, since it uses less digits than its factorization.

857291171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7085073 (or 7085062 counting only the distinct ones).

The product of its digits is 35280, while the sum is 41.

The square root of 857291171 is about 29279.5350202151. The cubic root of 857291171 is about 949.9690372180.

The spelling of 857291171 in words is "eight hundred fifty-seven million, two hundred ninety-one thousand, one hundred seventy-one".