11185 has 4 divisors (see below), whose sum is σ = 13428. Its totient is φ = 8944.

The previous prime is 11177. The next prime is 11197. The reversal of 11185 is 58111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6561 + 4624 = 81^2 + 68^2 .

It is a cyclic number.

It is not a de Polignac number, because 11185 - 2³ = 11177 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114 + ... + 1123.

It is an arithmetic number, because the mean of its divisors is an integer number (3357).

2¹¹¹⁸⁵ is an apocalyptic number.

It is an amenable number.

11185 is a deficient number, since it is larger than the sum of its proper divisors (2243).

11185 is an equidigital number, since it uses as much as digits as its factorization.

11185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242.

The product of its digits is 40, while the sum is 16.

The square root of 11185 is about 105.7591603598. The cubic root of 11185 is about 22.3637860851.

Adding to 11185 its reverse (58111), we get a palindrome (69296).

It can be divided in two parts, 111 and 85, that added together give a square (196 = 14²).

The spelling of 11185 in words is "eleven thousand, one hundred eighty-five".