85855 has 16 divisors (see below), whose sum is σ = 129024. Its totient is φ = 53280.

The previous prime is 85853. The next prime is 85889. The reversal of 85855 is 55858.

It is a happy number.

85855 is nontrivially palindromic in base 13.

It is not a de Polignac number, because 85855 - 2¹ = 85853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85853) 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, 274 + ... + 496.

It is an arithmetic number, because the mean of its divisors is an integer number (8064).

2⁸⁵⁸⁵⁵ is an apocalyptic number.

85855 is a deficient number, since it is larger than the sum of its proper divisors (43169).

85855 is a wasteful number, since it uses less digits than its factorization.

85855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246.

The product of its digits is 8000, while the sum is 31.

The square root of 85855 is about 293.0102387290. The cubic root of 85855 is about 44.1152282770.

The spelling of 85855 in words is "eighty-five thousand, eight hundred fifty-five".