15559 has 2 divisors, whose sum is σ = 15560. Its totient is φ = 15558.

The previous prime is 15551. The next prime is 15569. The reversal of 15559 is 95551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15559 - 2^{3} = 15551 is a prime.

It is a plaindrome in base 10.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15551) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7779 + 7780.

It is an arithmetic number, because the mean of its divisors is an integer number (7780).

2^{15559} is an apocalyptic number.

15559 is a deficient number, since it is larger than the sum of its proper divisors (1).

15559 is an equidigital number, since it uses as much as digits as its factorization.

15559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1125, while the sum is 25.

The square root of 15559 is about 124.7357206256. The cubic root of 15559 is about 24.9647503218.

It can be divided in two parts, 15 and 559, that multiplied together give a triangular number (8385 = T_{129}).

The spelling of 15559 in words is "fifteen thousand, five hundred fifty-nine".

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