495857 has 4 divisors (see below), whose sum is σ = 517440. Its totient is φ = 474276.

The previous prime is 495851. The next prime is 495877. The reversal of 495857 is 758594.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 495857 - 2¹⁴ = 479473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 495857.

It is not an unprimeable number, because it can be changed into a prime (495851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10757 + ... + 10802.

It is an arithmetic number, because the mean of its divisors is an integer number (129360).

2⁴⁹⁵⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

495857 is a deficient number, since it is larger than the sum of its proper divisors (21583).

495857 is a wasteful number, since it uses less digits than its factorization.

495857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21582.

The product of its digits is 50400, while the sum is 38.

The square root of 495857 is about 704.1711439700. The cubic root of 495857 is about 79.1502242245.

The spelling of 495857 in words is "four hundred ninety-five thousand, eight hundred fifty-seven".