85455 has 20 divisors (see below), whose sum is σ = 153912. Its totient is φ = 45360.

The previous prime is 85453. The next prime is 85469. The reversal of 85455 is 55458.

It is not a de Polignac number, because 85455 - 2¹ = 85453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85451) 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 19 ways as a sum of consecutive naturals, for example, 300 + ... + 510.

2⁸⁵⁴⁵⁵ is an apocalyptic number.

85455 is a deficient number, since it is larger than the sum of its proper divisors (68457).

85455 is a wasteful number, since it uses less digits than its factorization.

85455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 219 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 85455 is about 292.3268718404. The cubic root of 85455 is about 44.0466103865.

It can be divided in two parts, 854 and 55, that added together give a palindrome (909).

The spelling of 85455 in words is "eighty-five thousand, four hundred fifty-five".