13047161 has 4 divisors (see below), whose sum is σ = 13054800. Its totient is φ = 13039524.

The previous prime is 13047157. The next prime is 13047163. The reversal of 13047161 is 16174031.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16174031 = 491 ⋅32941.

It is a cyclic number.

It is not a de Polignac number, because 13047161 - 2² = 13047157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13047163) 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, 50 + ... + 5108.

It is an arithmetic number, because the mean of its divisors is an integer number (3263700).

Almost surely, 2^13047161 is an apocalyptic number.

It is an amenable number.

13047161 is a deficient number, since it is larger than the sum of its proper divisors (7639).

13047161 is an equidigital number, since it uses as much as digits as its factorization.

13047161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7638.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 13047161 is about 3612.0854087355. The cubic root of 13047161 is about 235.4174622818.

The spelling of 13047161 in words is "thirteen million, forty-seven thousand, one hundred sixty-one".