12810539 has 4 divisors (see below), whose sum is σ = 14640624. Its totient is φ = 10980456.

The previous prime is 12810529. The next prime is 12810557. The reversal of 12810539 is 93501821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12810539 - 2⁸ = 12810283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12810529) 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 in 3 ways as a sum of consecutive naturals, for example, 915032 + ... + 915045.

It is an arithmetic number, because the mean of its divisors is an integer number (3660156).

Almost surely, 2^12810539 is an apocalyptic number.

12810539 is a deficient number, since it is larger than the sum of its proper divisors (1830085).

12810539 is an equidigital number, since it uses as much as digits as its factorization.

12810539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830084.

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

The square root of 12810539 is about 3579.1813309750. The cubic root of 12810539 is about 233.9856019095.

The spelling of 12810539 in words is "twelve million, eight hundred ten thousand, five hundred thirty-nine".