12530491 has 2 divisors, whose sum is σ = 12530492. Its totient is φ = 12530490.

The previous prime is 12530489. The next prime is 12530503. The reversal of 12530491 is 19403521.

It is a weak prime.

It is an emirp because it is prime and its reverse (19403521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12530491 - 2¹ = 12530489 is a prime.

Together with 12530489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12530471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6265245 + 6265246.

It is an arithmetic number, because the mean of its divisors is an integer number (6265246).

Almost surely, 2^12530491 is an apocalyptic number.

12530491 is a deficient number, since it is larger than the sum of its proper divisors (1).

12530491 is an equidigital number, since it uses as much as digits as its factorization.

12530491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 12530491 is about 3539.8433581163. The cubic root of 12530491 is about 232.2679907025.

The spelling of 12530491 in words is "twelve million, five hundred thirty thousand, four hundred ninety-one".