13172507 has 4 divisors (see below), whose sum is σ = 13194816. Its totient is φ = 13150200.

The previous prime is 13172483. The next prime is 13172527. The reversal of 13172507 is 70527131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70527131 = 23 ⋅3066397.

It is a cyclic number.

It is not a de Polignac number, because 13172507 - 2⁸ = 13172251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13172527) 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, 10244 + ... + 11457.

It is an arithmetic number, because the mean of its divisors is an integer number (3298704).

Almost surely, 2^13172507 is an apocalyptic number.

13172507 is a deficient number, since it is larger than the sum of its proper divisors (22309).

13172507 is an equidigital number, since it uses as much as digits as its factorization.

13172507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22308.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 13172507 is about 3629.3948531401. The cubic root of 13172507 is about 236.1689575801.

Adding to 13172507 its reverse (70527131), we get a palindrome (83699638).

The spelling of 13172507 in words is "thirteen million, one hundred seventy-two thousand, five hundred seven".