12875491 has 2 divisors, whose sum is σ = 12875492. Its totient is φ = 12875490.

The previous prime is 12875459. The next prime is 12875497. The reversal of 12875491 is 19457821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12875491 - 2⁵ = 12875459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12875491.

It is not a weakly prime, because it can be changed into another prime (12875497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6437745 + 6437746.

It is an arithmetic number, because the mean of its divisors is an integer number (6437746).

Almost surely, 2^12875491 is an apocalyptic number.

12875491 is a deficient number, since it is larger than the sum of its proper divisors (1).

12875491 is an equidigital number, since it uses as much as digits as its factorization.

12875491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 37.

The square root of 12875491 is about 3588.2434421315. The cubic root of 12875491 is about 234.3803867443.

It can be divided in two parts, 12875 and 491, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 12875491 in words is "twelve million, eight hundred seventy-five thousand, four hundred ninety-one".