13172797 has 4 divisors (see below), whose sum is σ = 14370336. Its totient is φ = 11975260.

The previous prime is 13172791. The next prime is 13172827. The reversal of 13172797 is 79727131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-13172797 is a prime.

It is a super-3 number, since 3×13172797³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13172791) 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, 598753 + ... + 598774.

It is an arithmetic number, because the mean of its divisors is an integer number (3592584).

Almost surely, 2^13172797 is an apocalyptic number.

It is an amenable number.

13172797 is a deficient number, since it is larger than the sum of its proper divisors (1197539).

13172797 is a wasteful number, since it uses less digits than its factorization.

13172797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197538.

The product of its digits is 18522, while the sum is 37.

The square root of 13172797 is about 3629.4348044840. The cubic root of 13172797 is about 236.1706906973.

It can be divided in two parts, 1317 and 2797, that added together give a palindrome (4114).

The spelling of 13172797 in words is "thirteen million, one hundred seventy-two thousand, seven hundred ninety-seven".