12147255 has 12 divisors (see below), whose sum is σ = 21055320. Its totient is φ = 6478512.

The previous prime is 12147221. The next prime is 12147263. The reversal of 12147255 is 55274121.

12147255 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 12147255 - 2⁸ = 12146999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134925 + ... + 135014.

It is an arithmetic number, because the mean of its divisors is an integer number (1754610).

Almost surely, 2^12147255 is an apocalyptic number.

12147255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12147255 is a deficient number, since it is larger than the sum of its proper divisors (8908065).

12147255 is a wasteful number, since it uses less digits than its factorization.

12147255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269950 (or 269947 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 12147255 is about 3485.2912360375. The cubic root of 12147255 is about 229.8755154973.

The spelling of 12147255 in words is "twelve million, one hundred forty-seven thousand, two hundred fifty-five".