12751279 has 4 divisors (see below), whose sum is σ = 12773376. Its totient is φ = 12729184.

The previous prime is 12751253. The next prime is 12751283. The reversal of 12751279 is 97215721.

12751279 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12751279 - 2¹⁷ = 12620207 is a prime.

It is a super-2 number, since 2×12751279² = 325190232271682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12751289) 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, 10159 + ... + 11344.

It is an arithmetic number, because the mean of its divisors is an integer number (3193344).

Almost surely, 2^12751279 is an apocalyptic number.

12751279 is a deficient number, since it is larger than the sum of its proper divisors (22097).

12751279 is an equidigital number, since it uses as much as digits as its factorization.

12751279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22096.

The product of its digits is 8820, while the sum is 34.

The square root of 12751279 is about 3570.8933056030. The cubic root of 12751279 is about 233.6242478016.

The spelling of 12751279 in words is "twelve million, seven hundred fifty-one thousand, two hundred seventy-nine".