12559551 has 12 divisors (see below), whose sum is σ = 17675352. Its totient is φ = 7931664.

The previous prime is 12559543. The next prime is 12559567. The reversal of 12559551 is 15595521.

It is not a de Polignac number, because 12559551 - 2³ = 12559543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12559501) 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 11 ways as a sum of consecutive naturals, for example, 4716 + ... + 6881.

It is an arithmetic number, because the mean of its divisors is an integer number (1472946).

Almost surely, 2^12559551 is an apocalyptic number.

12559551 is a deficient number, since it is larger than the sum of its proper divisors (5115801).

12559551 is a wasteful number, since it uses less digits than its factorization.

12559551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11638 (or 11619 counting only the distinct ones).

The product of its digits is 11250, while the sum is 33.

The square root of 12559551 is about 3543.9456824280. The cubic root of 12559551 is about 232.4474063023.

It can be divided in two parts, 1 and 2559551, that added together give a palindrome (2559552).

The spelling of 12559551 in words is "twelve million, five hundred fifty-nine thousand, five hundred fifty-one".