12916261 has 2 divisors, whose sum is σ = 12916262. Its totient is φ = 12916260.

The previous prime is 12916247. The next prime is 12916279. The reversal of 12916261 is 16261921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12383361 + 532900 = 3519^2 + 730^2 .

It is a cyclic number.

It is not a de Polignac number, because 12916261 - 2¹⁷ = 12785189 is a prime.

It is equal to p₈₄₄₁₆₅ and since 12916261 and 844165 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12916231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6458130 + 6458131.

It is an arithmetic number, because the mean of its divisors is an integer number (6458131).

Almost surely, 2^12916261 is an apocalyptic number.

It is an amenable number.

12916261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12916261 is an equidigital number, since it uses as much as digits as its factorization.

12916261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 28.

The square root of 12916261 is about 3593.9200046746. The cubic root of 12916261 is about 234.6275131155.

The spelling of 12916261 in words is "twelve million, nine hundred sixteen thousand, two hundred sixty-one".