855135 has 24 divisors (see below), whose sum is σ = 1532544. Its totient is φ = 440640.

The previous prime is 855131. The next prime is 855143. The reversal of 855135 is 531558.

It is not a de Polignac number, because 855135 - 2² = 855131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 855099 and 855108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1089 + ... + 1701.

It is an arithmetic number, because the mean of its divisors is an integer number (63856).

2⁸⁵⁵¹³⁵ is an apocalyptic number.

855135 is a deficient number, since it is larger than the sum of its proper divisors (677409).

855135 is a wasteful number, since it uses less digits than its factorization.

855135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 652 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 855135 is about 924.7350972035. The cubic root of 855135 is about 94.9171946963.

It can be divided in two parts, 855 and 135, that added together give a triangular number (990 = T₄₄).

The spelling of 855135 in words is "eight hundred fifty-five thousand, one hundred thirty-five".