12597161 has 2 divisors, whose sum is σ = 12597162. Its totient is φ = 12597160.

The previous prime is 12597157. The next prime is 12597163. The reversal of 12597161 is 16179521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9339136 + 3258025 = 3056^2 + 1805^2 .

It is a cyclic number.

It is not a de Polignac number, because 12597161 - 2² = 12597157 is a prime.

Together with 12597163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12597163) 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 as a sum of consecutive naturals, namely, 6298580 + 6298581.

It is an arithmetic number, because the mean of its divisors is an integer number (6298581).

Almost surely, 2^12597161 is an apocalyptic number.

It is an amenable number.

12597161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12597161 is an equidigital number, since it uses as much as digits as its factorization.

12597161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 32.

The square root of 12597161 is about 3549.2479485097. The cubic root of 12597161 is about 232.6791989575.

The spelling of 12597161 in words is "twelve million, five hundred ninety-seven thousand, one hundred sixty-one".