12530891 has 2 divisors, whose sum is σ = 12530892. Its totient is φ = 12530890.

The previous prime is 12530879. The next prime is 12530893. The reversal of 12530891 is 19803521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12530891 is a prime.

Together with 12530893, 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 (12530893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6265445 + 6265446.

It is an arithmetic number, because the mean of its divisors is an integer number (6265446).

Almost surely, 2^12530891 is an apocalyptic number.

12530891 is a deficient number, since it is larger than the sum of its proper divisors (1).

12530891 is an equidigital number, since it uses as much as digits as its factorization.

12530891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 12530891 is about 3539.8998573406. The cubic root of 12530891 is about 232.2704621728.

The spelling of 12530891 in words is "twelve million, five hundred thirty thousand, eight hundred ninety-one".