85518 has 12 divisors (see below), whose sum is σ = 185328. Its totient is φ = 28500.

The previous prime is 85517. The next prime is 85523. The reversal of 85518 is 81558.

It is a junction number, because it is equal to n+sod(n) for n = 85491 and 85500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2358 + ... + 2393.

It is an arithmetic number, because the mean of its divisors is an integer number (15444).

2⁸⁵⁵¹⁸ is an apocalyptic number.

85518 is an abundant number, since it is smaller than the sum of its proper divisors (99810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85518 is a wasteful number, since it uses less digits than its factorization.

85518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759 (or 4756 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

The square root of 85518 is about 292.4346080750. The cubic root of 85518 is about 44.0574318903.

Subtracting from 85518 its sum of digits (27), we obtain a triangular number (85491 = T₄₁₃).

It can be divided in two parts, 8 and 5518, that multiplied together give a palindrome (44144).

The spelling of 85518 in words is "eighty-five thousand, five hundred eighteen".