12947261 has 2 divisors, whose sum is σ = 12947262. Its totient is φ = 12947260.

The previous prime is 12947237. The next prime is 12947293. The reversal of 12947261 is 16274921.

It is a happy number.

It is an a-pointer prime, because the next prime (12947293) can be obtained adding 12947261 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11519236 + 1428025 = 3394^2 + 1195^2 .

It is a cyclic number.

It is not a de Polignac number, because 12947261 - 2⁶ = 12947197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12947161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6473630 + 6473631.

It is an arithmetic number, because the mean of its divisors is an integer number (6473631).

Almost surely, 2^12947261 is an apocalyptic number.

It is an amenable number.

12947261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12947261 is an equidigital number, since it uses as much as digits as its factorization.

12947261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 12947261 is about 3598.2302594470. The cubic root of 12947261 is about 234.8150710501.

The spelling of 12947261 in words is "twelve million, nine hundred forty-seven thousand, two hundred sixty-one".