12855013 has 2 divisors, whose sum is σ = 12855014. Its totient is φ = 12855012.

The previous prime is 12854971. The next prime is 12855023. The reversal of 12855013 is 31055821.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7935489 + 4919524 = 2817^2 + 2218^2 .

It is a cyclic number.

It is not a de Polignac number, because 12855013 - 2¹⁷ = 12723941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12855023) 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 as a sum of consecutive naturals, namely, 6427506 + 6427507.

It is an arithmetic number, because the mean of its divisors is an integer number (6427507).

Almost surely, 2^12855013 is an apocalyptic number.

It is an amenable number.

12855013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12855013 is an equidigital number, since it uses as much as digits as its factorization.

12855013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 12855013 is about 3585.3888213135. The cubic root of 12855013 is about 234.2560629843.

The spelling of 12855013 in words is "twelve million, eight hundred fifty-five thousand, thirteen".