15117005 has 4 divisors (see below), whose sum is σ = 18140412. Its totient is φ = 12093600.

The previous prime is 15116897. The next prime is 15117013. The reversal of 15117005 is 50071151.

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 1552516 + 13564489 = 1246^2 + 3683^2 .

It is not a de Polignac number, because 15117005 - 2¹⁰ = 15115981 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 1511696 + ... + 1511705.

It is an arithmetic number, because the mean of its divisors is an integer number (4535103).

Almost surely, 2^15117005 is an apocalyptic number.

It is an amenable number.

15117005 is a deficient number, since it is larger than the sum of its proper divisors (3023407).

15117005 is an equidigital number, since it uses as much as digits as its factorization.

15117005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023406.

The product of its (nonzero) digits is 175, while the sum is 20.

The square root of 15117005 is about 3888.0592845274. The cubic root of 15117005 is about 247.2607898608.

Adding to 15117005 its reverse (50071151), we get a palindrome (65188156).

The spelling of 15117005 in words is "fifteen million, one hundred seventeen thousand, five".