12555813 has 8 divisors (see below), whose sum is σ = 17015776. Its totient is φ = 8233200.

The previous prime is 12555797. The next prime is 12555817. The reversal of 12555813 is 31855521.

12555813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12555813 - 2⁴ = 12555797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12555817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34123 + ... + 34488.

It is an arithmetic number, because the mean of its divisors is an integer number (2126972).

Almost surely, 2^12555813 is an apocalyptic number.

It is an amenable number.

12555813 is a deficient number, since it is larger than the sum of its proper divisors (4459963).

12555813 is an equidigital number, since it uses as much as digits as its factorization.

12555813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68675.

The product of its digits is 6000, while the sum is 30.

The square root of 12555813 is about 3543.4182648962. The cubic root of 12555813 is about 232.4243435188.

The spelling of 12555813 in words is "twelve million, five hundred fifty-five thousand, eight hundred thirteen".