11158 has 8 divisors (see below), whose sum is σ = 19152. Its totient is φ = 4776.

The previous prime is 11149. The next prime is 11159. The reversal of 11158 is 85111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 10 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385 + ... + 412.

It is an arithmetic number, because the mean of its divisors is an integer number (2394).

2¹¹¹⁵⁸ is an apocalyptic number.

11158 is a deficient number, since it is larger than the sum of its proper divisors (7994).

11158 is an equidigital number, since it uses as much as digits as its factorization.

11158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806.

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

The square root of 11158 is about 105.6314347152. The cubic root of 11158 is about 22.3457765860.

Adding to 11158 its reverse (85111), we get a palindrome (96269).

It can be divided in two parts, 111 and 58, that added together give a square (169 = 13²).

The spelling of 11158 in words is "eleven thousand, one hundred fifty-eight".