457857 has 6 divisors (see below), whose sum is σ = 661362. Its totient is φ = 305232.

The previous prime is 457837. The next prime is 457871. The reversal of 457857 is 758754.

It can be written as a sum of positive squares in only one way, i.e., 404496 + 53361 = 636^2 + 231^2 .

It is not a de Polignac number, because 457857 - 2¹¹ = 455809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (457817) 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, 25428 + ... + 25445.

It is an arithmetic number, because the mean of its divisors is an integer number (110227).

2⁴⁵⁷⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

457857 is a deficient number, since it is larger than the sum of its proper divisors (203505).

457857 is a wasteful number, since it uses less digits than its factorization.

457857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50879 (or 50876 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 457857 is about 676.6513134547. The cubic root of 457857 is about 77.0743645437.

The spelling of 457857 in words is "four hundred fifty-seven thousand, eight hundred fifty-seven".