855775 has 6 divisors (see below), whose sum is σ = 1061192. Its totient is φ = 684600.

The previous prime is 855739. The next prime is 855781. The reversal of 855775 is 577558.

It is a de Polignac number, because none of the positive numbers 2^k-855775 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17091 + ... + 17140.

2⁸⁵⁵⁷⁷⁵ is an apocalyptic number.

855775 is a deficient number, since it is larger than the sum of its proper divisors (205417).

855775 is a wasteful number, since it uses less digits than its factorization.

855775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34241 (or 34236 counting only the distinct ones).

The product of its digits is 49000, while the sum is 37.

The square root of 855775 is about 925.0810775278. The cubic root of 855775 is about 94.9408680953.

The spelling of 855775 in words is "eight hundred fifty-five thousand, seven hundred seventy-five".