12279555 has 12 divisors (see below), whose sum is σ = 21284640. Its totient is φ = 6549072.

The previous prime is 12279551. The next prime is 12279569. The reversal of 12279555 is 55597221.

12279555 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12279555 - 2² = 12279551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12279551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136395 + ... + 136484.

It is an arithmetic number, because the mean of its divisors is an integer number (1773720).

Almost surely, 2^12279555 is an apocalyptic number.

12279555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12279555 is a deficient number, since it is larger than the sum of its proper divisors (9005085).

12279555 is a wasteful number, since it uses less digits than its factorization.

12279555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272890 (or 272887 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 12279555 is about 3504.2195992831. The cubic root of 12279555 is about 230.7070554293.

The spelling of 12279555 in words is "twelve million, two hundred seventy-nine thousand, five hundred fifty-five".