15117 has 4 divisors (see below), whose sum is σ = 20160. Its totient is φ = 10076.

The previous prime is 15107. The next prime is 15121. The reversal of 15117 is 71151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15117 - 2⁴ = 15101 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 15096 and 15105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15107) 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, 2517 + ... + 2522.

It is an arithmetic number, because the mean of its divisors is an integer number (5040).

2¹⁵¹¹⁷ is an apocalyptic number.

It is an amenable number.

15117 is a deficient number, since it is larger than the sum of its proper divisors (5043).

15117 is an equidigital number, since it uses as much as digits as its factorization.

15117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5042.

The product of its digits is 35, while the sum is 15.

The square root of 15117 is about 122.9512098354. The cubic root of 15117 is about 24.7260762600.

Adding to 15117 its reverse (71151), we get a palindrome (86268).

The spelling of 15117 in words is "fifteen thousand, one hundred seventeen".