12851579 has 4 divisors (see below), whose sum is σ = 13840176. Its totient is φ = 11862984.

The previous prime is 12851569. The next prime is 12851591. The reversal of 12851579 is 97515821.

12851579 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97515821 = 13 ⋅7501217.

It is a cyclic number.

It is not a de Polignac number, because 12851579 - 2⁸ = 12851323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12851569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494279 + ... + 494304.

It is an arithmetic number, because the mean of its divisors is an integer number (3460044).

Almost surely, 2^12851579 is an apocalyptic number.

12851579 is a deficient number, since it is larger than the sum of its proper divisors (988597).

12851579 is an equidigital number, since it uses as much as digits as its factorization.

12851579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988596.

The product of its digits is 25200, while the sum is 38.

The square root of 12851579 is about 3584.9099012388. The cubic root of 12851579 is about 234.2352019406.

The spelling of 12851579 in words is "twelve million, eight hundred fifty-one thousand, five hundred seventy-nine".