15118 has 4 divisors (see below), whose sum is σ = 22680. Its totient is φ = 7558.

The previous prime is 15107. The next prime is 15121. The reversal of 15118 is 81151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81151 = 7 ⋅11593.

It is a congruent number.

It is an unprimeable number.

15118 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3778 + ... + 3781.

It is an arithmetic number, because the mean of its divisors is an integer number (5670).

2¹⁵¹¹⁸ is an apocalyptic number.

15118 is a deficient number, since it is larger than the sum of its proper divisors (7562).

15118 is an equidigital number, since it uses as much as digits as its factorization.

15118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7561.

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

The square root of 15118 is about 122.9552764220. The cubic root of 15118 is about 24.7266214637.

Adding to 15118 its reverse (81151), we get a palindrome (96269).

It can be divided in two parts, 151 and 18, that added together give a square (169 = 13²).

The spelling of 15118 in words is "fifteen thousand, one hundred eighteen".