12555229 has 4 divisors (see below), whose sum is σ = 12620476. Its totient is φ = 12489984.

The previous prime is 12555199. The next prime is 12555241. The reversal of 12555229 is 92255521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92255521 = 101 ⋅913421.

It can be written as a sum of positive squares in 2 ways, for example, as 1512900 + 11042329 = 1230^2 + 3323^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12555229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12555229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12555629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32334 + ... + 32719.

It is an arithmetic number, because the mean of its divisors is an integer number (3155119).

Almost surely, 2^12555229 is an apocalyptic number.

It is an amenable number.

12555229 is a deficient number, since it is larger than the sum of its proper divisors (65247).

12555229 is an equidigital number, since it uses as much as digits as its factorization.

12555229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65246.

The product of its digits is 9000, while the sum is 31.

The square root of 12555229 is about 3543.3358576347. The cubic root of 12555229 is about 232.4207399310.

The spelling of 12555229 in words is "twelve million, five hundred fifty-five thousand, two hundred twenty-nine".