13172997 has 8 divisors (see below), whose sum is σ = 18327744. Its totient is φ = 8400128.

The previous prime is 13172983. The next prime is 13173001. The reversal of 13172997 is 79927131.

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

It is a cyclic number.

It is not a de Polignac number, because 13172997 - 2⁴ = 13172981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13172927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95388 + ... + 95525.

It is an arithmetic number, because the mean of its divisors is an integer number (2290968).

Almost surely, 2^13172997 is an apocalyptic number.

It is an amenable number.

13172997 is a deficient number, since it is larger than the sum of its proper divisors (5154747).

13172997 is a wasteful number, since it uses less digits than its factorization.

13172997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190939.

The product of its digits is 23814, while the sum is 39.

The square root of 13172997 is about 3629.4623568788. The cubic root of 13172997 is about 236.1718859357.

The spelling of 13172997 in words is "thirteen million, one hundred seventy-two thousand, nine hundred ninety-seven".