12078055 has 16 divisors (see below), whose sum is σ = 16182144. Its totient is φ = 8578080.

The previous prime is 12078049. The next prime is 12078097. The reversal of 12078055 is 55087021.

It is not a de Polignac number, because 12078055 - 2³ = 12078047 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189 + ... + 4918.

It is an arithmetic number, because the mean of its divisors is an integer number (1011384).

Almost surely, 2^12078055 is an apocalyptic number.

12078055 is a deficient number, since it is larger than the sum of its proper divisors (4104089).

12078055 is a wasteful number, since it uses less digits than its factorization.

12078055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5166.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 12078055 is about 3475.3496226999. The cubic root of 12078055 is about 229.4381687197.

The spelling of 12078055 in words is "twelve million, seventy-eight thousand, fifty-five".