12556233 has 6 divisors (see below), whose sum is σ = 18136794. Its totient is φ = 8370816.

The previous prime is 12556231. The next prime is 12556237. The reversal of 12556233 is 33265521.

It can be written as a sum of positive squares in only one way, i.e., 10517049 + 2039184 = 3243^2 + 1428^2 .

It is not a de Polignac number, because 12556233 - 2¹ = 12556231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12556197 and 12556206.

It is not an unprimeable number, because it can be changed into a prime (12556231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 697560 + ... + 697577.

It is an arithmetic number, because the mean of its divisors is an integer number (3022799).

Almost surely, 2^12556233 is an apocalyptic number.

It is an amenable number.

12556233 is a deficient number, since it is larger than the sum of its proper divisors (5580561).

12556233 is a wasteful number, since it uses less digits than its factorization.

12556233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395143 (or 1395140 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 12556233 is about 3543.4775292077. The cubic root of 12556233 is about 232.4269350710.

The spelling of 12556233 in words is "twelve million, five hundred fifty-six thousand, two hundred thirty-three".