13172715 has 12 divisors (see below), whose sum is σ = 22832784. Its totient is φ = 7025424.

The previous prime is 13172713. The next prime is 13172717. The reversal of 13172715 is 51727131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13172713) and next prime (13172717).

It is not a de Polignac number, because 13172715 - 2¹ = 13172713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13172713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146319 + ... + 146408.

It is an arithmetic number, because the mean of its divisors is an integer number (1902732).

Almost surely, 2^13172715 is an apocalyptic number.

13172715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13172715 is a deficient number, since it is larger than the sum of its proper divisors (9660069).

13172715 is a wasteful number, since it uses less digits than its factorization.

13172715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292738 (or 292735 counting only the distinct ones).

The product of its digits is 1470, while the sum is 27.

The square root of 13172715 is about 3629.4235079417. The cubic root of 13172715 is about 236.1702006460.

Adding to 13172715 its reverse (51727131), we get a palindrome (64899846).

The spelling of 13172715 in words is "thirteen million, one hundred seventy-two thousand, seven hundred fifteen".