180559 has 4 divisors (see below), whose sum is σ = 182416. Its totient is φ = 178704.

The previous prime is 180547. The next prime is 180563. The reversal of 180559 is 955081.

180559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180539) 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, 774 + ... + 979.

It is an arithmetic number, because the mean of its divisors is an integer number (45604).

2¹⁸⁰⁵⁵⁹ is an apocalyptic number.

180559 is a deficient number, since it is larger than the sum of its proper divisors (1857).

180559 is a wasteful number, since it uses less digits than its factorization.

180559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 180559 is about 424.9223458469. The cubic root of 180559 is about 56.5205501251.

The spelling of 180559 in words is "one hundred eighty thousand, five hundred fifty-nine".