13172443 has 8 divisors (see below), whose sum is σ = 13367376. Its totient is φ = 12979200.

The previous prime is 13172441. The next prime is 13172473. The reversal of 13172443 is 34427131.

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 13172443 - 2¹ = 13172441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13172441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25023 + ... + 25543.

It is an arithmetic number, because the mean of its divisors is an integer number (1670922).

Almost surely, 2^13172443 is an apocalyptic number.

13172443 is a deficient number, since it is larger than the sum of its proper divisors (194933).

13172443 is a wasteful number, since it uses less digits than its factorization.

13172443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845.

The product of its digits is 2016, while the sum is 25.

The square root of 13172443 is about 3629.3860362326. The cubic root of 13172443 is about 236.1685750956.

Adding to 13172443 its reverse (34427131), we get a palindrome (47599574).

The spelling of 13172443 in words is "thirteen million, one hundred seventy-two thousand, four hundred forty-three".