12651559 has 2 divisors, whose sum is σ = 12651560. Its totient is φ = 12651558.

The previous prime is 12651533. The next prime is 12651581. The reversal of 12651559 is 95515621.

It is a strong prime.

It is an emirp because it is prime and its reverse (95515621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12651559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12651059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6325779 + 6325780.

It is an arithmetic number, because the mean of its divisors is an integer number (6325780).

Almost surely, 2^12651559 is an apocalyptic number.

12651559 is a deficient number, since it is larger than the sum of its proper divisors (1).

12651559 is an equidigital number, since it uses as much as digits as its factorization.

12651559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13500, while the sum is 34.

The square root of 12651559 is about 3556.9030068305. The cubic root of 12651559 is about 233.0136422351.

The spelling of 12651559 in words is "twelve million, six hundred fifty-one thousand, five hundred fifty-nine".