12855117 has 16 divisors (see below), whose sum is σ = 18938880. Its totient is φ = 7690800.

The previous prime is 12855107. The next prime is 12855127. The reversal of 12855117 is 71155821.

It is an interprime number because it is at equal distance from previous prime (12855107) and next prime (12855127).

It is not a de Polignac number, because 12855117 - 2⁶ = 12855053 is a prime.

It is a zygodrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12855107) 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 15 ways as a sum of consecutive naturals, for example, 142 + ... + 5072.

It is an arithmetic number, because the mean of its divisors is an integer number (1183680).

Almost surely, 2^12855117 is an apocalyptic number.

It is an amenable number.

12855117 is a deficient number, since it is larger than the sum of its proper divisors (6083763).

12855117 is a wasteful number, since it uses less digits than its factorization.

12855117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5024.

The product of its digits is 2800, while the sum is 30.

The square root of 12855117 is about 3585.4033245926. The cubic root of 12855117 is about 234.2566947110.

The spelling of 12855117 in words is "twelve million, eight hundred fifty-five thousand, one hundred seventeen".