12855055 has 4 divisors (see below), whose sum is σ = 15426072. Its totient is φ = 10284040.

The previous prime is 12855053. The next prime is 12855061. The reversal of 12855055 is 55055821.

12855055 is digitally balanced in base 3, 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 not a de Polignac number, because 12855055 - 2¹ = 12855053 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 (12855053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1285501 + ... + 1285510.

It is an arithmetic number, because the mean of its divisors is an integer number (3856518).

Almost surely, 2^12855055 is an apocalyptic number.

12855055 is a deficient number, since it is larger than the sum of its proper divisors (2571017).

12855055 is an equidigital number, since it uses as much as digits as its factorization.

12855055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571016.

The product of its (nonzero) digits is 10000, while the sum is 31.

The square root of 12855055 is about 3585.3946784141. The cubic root of 12855055 is about 234.2563181051.

The spelling of 12855055 in words is "twelve million, eight hundred fifty-five thousand, fifty-five".