13172151 has 4 divisors (see below), whose sum is σ = 17562872. Its totient is φ = 8781432.

The previous prime is 13172141. The next prime is 13172167. The reversal of 13172151 is 15127131.

It is a happy number.

13172151 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13172151 - 2⁶ = 13172087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13172101) 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, 2195356 + ... + 2195361.

It is an arithmetic number, because the mean of its divisors is an integer number (4390718).

Almost surely, 2^13172151 is an apocalyptic number.

13172151 is a deficient number, since it is larger than the sum of its proper divisors (4390721).

13172151 is an equidigital number, since it uses as much as digits as its factorization.

13172151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4390720.

The product of its digits is 210, while the sum is 21.

The square root of 13172151 is about 3629.3458088201. The cubic root of 13172151 is about 236.1668299945.

Adding to 13172151 its reverse (15127131), we get a palindrome (28299282).

The spelling of 13172151 in words is "thirteen million, one hundred seventy-two thousand, one hundred fifty-one".