858255 has 16 divisors (see below), whose sum is σ = 1421280. Its totient is φ = 441728.

The previous prime is 858251. The next prime is 858259. The reversal of 858255 is 552858.

858255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (858251) and next prime (858259).

It is not a de Polignac number, because 858255 - 2² = 858251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552 + ... + 1421.

It is an arithmetic number, because the mean of its divisors is an integer number (88830).

2⁸⁵⁸²⁵⁵ is an apocalyptic number.

858255 is a deficient number, since it is larger than the sum of its proper divisors (563025).

858255 is a wasteful number, since it uses less digits than its factorization.

858255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010.

The product of its digits is 16000, while the sum is 33.

The square root of 858255 is about 926.4205308606. The cubic root of 858255 is about 95.0324911947.

The spelling of 858255 in words is "eight hundred fifty-eight thousand, two hundred fifty-five".