857255 has 12 divisors (see below), whose sum is σ = 1197000. Its totient is φ = 587664.

The previous prime is 857249. The next prime is 857267. The reversal of 857255 is 552758.

It is a happy number.

857255 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 857255 - 2¹² = 853159 is a prime.

It is a super-2 number, since 2×857255² = 1469772270050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1505 + ... + 1994.

It is an arithmetic number, because the mean of its divisors is an integer number (99750).

2⁸⁵⁷²⁵⁵ is an apocalyptic number.

857255 is a deficient number, since it is larger than the sum of its proper divisors (339745).

857255 is a wasteful number, since it uses less digits than its factorization.

857255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3518 (or 3511 counting only the distinct ones).

The product of its digits is 14000, while the sum is 32.

The square root of 857255 is about 925.8806618566. The cubic root of 857255 is about 94.9955676602.

The spelling of 857255 in words is "eight hundred fifty-seven thousand, two hundred fifty-five".