12555055 has 4 divisors (see below), whose sum is σ = 15066072. Its totient is φ = 10044040.

The previous prime is 12555047. The next prime is 12555071. The reversal of 12555055 is 55055521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12555055 - 2³ = 12555047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1255501 + ... + 1255510.

It is an arithmetic number, because the mean of its divisors is an integer number (3766518).

Almost surely, 2^12555055 is an apocalyptic number.

12555055 is a deficient number, since it is larger than the sum of its proper divisors (2511017).

12555055 is an equidigital number, since it uses as much as digits as its factorization.

12555055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511016.

The product of its (nonzero) digits is 6250, while the sum is 28.

The square root of 12555055 is about 3543.3113044157. The cubic root of 12555055 is about 232.4196662377.

The spelling of 12555055 in words is "twelve million, five hundred fifty-five thousand, fifty-five".