12275279 has 4 divisors (see below), whose sum is σ = 12326880. Its totient is φ = 12223680.

The previous prime is 12275269. The next prime is 12275293. The reversal of 12275279 is 97257221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97257221 = 17 ⋅5721013.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12275279 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 (12275209) 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, 25442 + ... + 25919.

It is an arithmetic number, because the mean of its divisors is an integer number (3081720).

Almost surely, 2^12275279 is an apocalyptic number.

12275279 is a deficient number, since it is larger than the sum of its proper divisors (51601).

12275279 is an equidigital number, since it uses as much as digits as its factorization.

12275279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51600.

The product of its digits is 17640, while the sum is 35.

The square root of 12275279 is about 3503.6094245792. The cubic root of 12275279 is about 230.6802732998.

The spelling of 12275279 in words is "twelve million, two hundred seventy-five thousand, two hundred seventy-nine".