859255 has 4 divisors (see below), whose sum is σ = 1031112. Its totient is φ = 687400.

The previous prime is 859249. The next prime is 859259. The reversal of 859255 is 552958.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 859255 - 2⁵ = 859223 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 859255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859259) 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, 85921 + ... + 85930.

It is an arithmetic number, because the mean of its divisors is an integer number (257778).

2⁸⁵⁹²⁵⁵ is an apocalyptic number.

859255 is a deficient number, since it is larger than the sum of its proper divisors (171857).

859255 is a wasteful number, since it uses less digits than its factorization.

859255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171856.

The product of its digits is 18000, while the sum is 34.

The square root of 859255 is about 926.9600854406. The cubic root of 859255 is about 95.0693860593.

The spelling of 859255 in words is "eight hundred fifty-nine thousand, two hundred fifty-five".