857023173 has 10 divisors (see below), whose sum is σ = 1280244614. Its totient is φ = 571348728.

The previous prime is 857023157. The next prime is 857023199. The reversal of 857023173 is 371320758.

It can be written as a sum of positive squares in only one way, i.e., 817559649 + 39463524 = 28593^2 + 6282^2 .

It is not a de Polignac number, because 857023173 - 2⁴ = 857023157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857023103) 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 in 9 ways as a sum of consecutive naturals, for example, 5290186 + ... + 5290347.

Almost surely, 2^857023173 is an apocalyptic number.

It is an amenable number.

857023173 is a deficient number, since it is larger than the sum of its proper divisors (423221441).

857023173 is a wasteful number, since it uses less digits than its factorization.

857023173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10580545 (or 10580536 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 857023173 is about 29274.9581212339. The cubic root of 857023173 is about 949.8700368844.

The spelling of 857023173 in words is "eight hundred fifty-seven million, twenty-three thousand, one hundred seventy-three".