12243559 has 4 divisors (see below), whose sum is σ = 12574504. Its totient is φ = 11912616.

The previous prime is 12243557. The next prime is 12243563. The reversal of 12243559 is 95534221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95534221 = 47 ⋅2032643.

It is a cyclic number.

It is not a de Polignac number, because 12243559 - 2¹ = 12243557 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 12243559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165417 + ... + 165490.

It is an arithmetic number, because the mean of its divisors is an integer number (3143626).

Almost surely, 2^12243559 is an apocalyptic number.

12243559 is a deficient number, since it is larger than the sum of its proper divisors (330945).

12243559 is an equidigital number, since it uses as much as digits as its factorization.

12243559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330944.

The product of its digits is 10800, while the sum is 31.

The square root of 12243559 is about 3499.0797361592. The cubic root of 12243559 is about 230.4814050433.

It can be divided in two parts, 122 and 43559, that added together give a square (43681 = 209²).

The spelling of 12243559 in words is "twelve million, two hundred forty-three thousand, five hundred fifty-nine".