12345559 has 2 divisors, whose sum is σ = 12345560. Its totient is φ = 12345558.

The previous prime is 12345547. The next prime is 12345569. The reversal of 12345559 is 95554321.

It is a strong prime.

It is an emirp because it is prime and its reverse (95554321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12345559 - 2⁵ = 12345527 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12345539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6172779 + 6172780.

It is an arithmetic number, because the mean of its divisors is an integer number (6172780).

Almost surely, 2^12345559 is an apocalyptic number.

12345559 is a deficient number, since it is larger than the sum of its proper divisors (1).

12345559 is an equidigital number, since it uses as much as digits as its factorization.

12345559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 34.

The square root of 12345559 is about 3513.6247665338. The cubic root of 12345559 is about 231.1196758739.

The spelling of 12345559 in words is "twelve million, three hundred forty-five thousand, five hundred fifty-nine".