15315117 has 8 divisors (see below), whose sum is σ = 20438496. Its totient is φ = 10200912.

The previous prime is 15315107. The next prime is 15315119. The reversal of 15315117 is 71151351.

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

It is not a de Polignac number, because 15315117 - 2⁴ = 15315101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15315119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4383 + ... + 7059.

It is an arithmetic number, because the mean of its divisors is an integer number (2554812).

Almost surely, 2^15315117 is an apocalyptic number.

It is an amenable number.

15315117 is a deficient number, since it is larger than the sum of its proper divisors (5123379).

15315117 is a wasteful number, since it uses less digits than its factorization.

15315117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4587.

The product of its digits is 525, while the sum is 24.

The square root of 15315117 is about 3913.4533343327. The cubic root of 15315117 is about 248.3362428779.

Adding to 15315117 its reverse (71151351), we get a palindrome (86466468).

The spelling of 15315117 in words is "fifteen million, three hundred fifteen thousand, one hundred seventeen".