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12559 = 19661

12559 has 4 divisors (see below), whose sum is σ = 13240. Its totient is φ = 11880.

The previous prime is 12553. The next prime is 12569. The reversal of 12559 is 95521.

12559 = T90 + T91 + T92.

12559 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95521 = 591619.

It is a cyclic number.

It is not a de Polignac number, because 12559 - 25 = 12527 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312 + ... + 349.

It is an arithmetic number, because the mean of its divisors is an integer number (3310).

212559 is an apocalyptic number.

12559 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12559 is the 92-nd centered triangular number.

12559 is a deficient number, since it is larger than the sum of its proper divisors (681).

12559 is an equidigital number, since it uses as much as digits as its factorization.

12559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680.

The product of its digits is 450, while the sum is 22.

The square root of 12559 is about 112.0669442789. The cubic root of 12559 is about 23.2444007020.

The spelling of 12559 in words is "twelve thousand, five hundred fifty-nine".

Divisors: 1 19 661 12559