13161147 has 4 divisors (see below), whose sum is σ = 17548200. Its totient is φ = 8774096.

The previous prime is 13161133. The next prime is 13161149. The reversal of 13161147 is 74116131.

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

It is a cyclic number.

It is not a de Polignac number, because 13161147 - 2⁴ = 13161131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13161149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2193522 + ... + 2193527.

It is an arithmetic number, because the mean of its divisors is an integer number (4387050).

Almost surely, 2^13161147 is an apocalyptic number.

13161147 is a deficient number, since it is larger than the sum of its proper divisors (4387053).

13161147 is an equidigital number, since it uses as much as digits as its factorization.

13161147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4387052.

The product of its digits is 504, while the sum is 24.

The square root of 13161147 is about 3627.8295163913. The cubic root of 13161147 is about 236.1010471722.

Adding to 13161147 its reverse (74116131), we get a palindrome (87277278).

The spelling of 13161147 in words is "thirteen million, one hundred sixty-one thousand, one hundred forty-seven".