12518279 has 4 divisors (see below), whose sum is σ = 13062576. Its totient is φ = 11973984.

The previous prime is 12518267. The next prime is 12518287. The reversal of 12518279 is 97281521.

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

It is not a de Polignac number, because 12518279 - 2¹⁶ = 12452743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12518179) 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, 272114 + ... + 272159.

It is an arithmetic number, because the mean of its divisors is an integer number (3265644).

Almost surely, 2^12518279 is an apocalyptic number.

12518279 is a deficient number, since it is larger than the sum of its proper divisors (544297).

12518279 is an equidigital number, since it uses as much as digits as its factorization.

12518279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544296.

The product of its digits is 10080, while the sum is 35.

The square root of 12518279 is about 3538.1180025545. The cubic root of 12518279 is about 232.1925113869.

The spelling of 12518279 in words is "twelve million, five hundred eighteen thousand, two hundred seventy-nine".