12530279 has 2 divisors, whose sum is σ = 12530280. Its totient is φ = 12530278.

The previous prime is 12530267. The next prime is 12530303. The reversal of 12530279 is 97203521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12530279 - 2⁴ = 12530263 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 (12530779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6265139 + 6265140.

It is an arithmetic number, because the mean of its divisors is an integer number (6265140).

Almost surely, 2^12530279 is an apocalyptic number.

12530279 is a deficient number, since it is larger than the sum of its proper divisors (1).

12530279 is an equidigital number, since it uses as much as digits as its factorization.

12530279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 12530279 is about 3539.8134131618. The cubic root of 12530279 is about 232.2666808020.

The spelling of 12530279 in words is "twelve million, five hundred thirty thousand, two hundred seventy-nine".