2857457173 has 2 divisors, whose sum is σ = 2857457174. Its totient is φ = 2857457172.

The previous prime is 2857457171. The next prime is 2857457263. The reversal of 2857457173 is 3717547582.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2781296644 + 76160529 = 52738^2 + 8727^2 .

It is a cyclic number.

It is not a de Polignac number, because 2857457173 - 2¹ = 2857457171 is a prime.

It is a super-2 number, since 2×2857457173² = 16330122991058303858, which contains 22 as substring.

Together with 2857457171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2857457171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1428728586 + 1428728587.

It is an arithmetic number, because the mean of its divisors is an integer number (1428728587).

Almost surely, 2^2857457173 is an apocalyptic number.

It is an amenable number.

2857457173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2857457173 is an equidigital number, since it uses as much as digits as its factorization.

2857457173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1646400, while the sum is 49.

The square root of 2857457173 is about 53455.1884572489. The cubic root of 2857457173 is about 1419.0354444443.

The spelling of 2857457173 in words is "two billion, eight hundred fifty-seven million, four hundred fifty-seven thousand, one hundred seventy-three".