12797161 has 4 divisors (see below), whose sum is σ = 13781572. Its totient is φ = 11812752.

The previous prime is 12797143. The next prime is 12797171. The reversal of 12797161 is 16179721.

12797161 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 can be written as a sum of positive squares in 2 ways, for example, as 6471936 + 6325225 = 2544^2 + 2515^2 .

It is a cyclic number.

It is not a de Polignac number, because 12797161 - 2⁹ = 12796649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12797171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492186 + ... + 492211.

It is an arithmetic number, because the mean of its divisors is an integer number (3445393).

Almost surely, 2^12797161 is an apocalyptic number.

It is an amenable number.

12797161 is a deficient number, since it is larger than the sum of its proper divisors (984411).

12797161 is an equidigital number, since it uses as much as digits as its factorization.

12797161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984410.

The product of its digits is 5292, while the sum is 34.

The square root of 12797161 is about 3577.3119796853. The cubic root of 12797161 is about 233.9041234317.

The spelling of 12797161 in words is "twelve million, seven hundred ninety-seven thousand, one hundred sixty-one".