180539 has 2 divisors, whose sum is σ = 180540. Its totient is φ = 180538.

The previous prime is 180533. The next prime is 180541. The reversal of 180539 is 935081.

180539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180539 is a prime.

Together with 180541, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (180533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90269 + 90270.

It is an arithmetic number, because the mean of its divisors is an integer number (90270).

2¹⁸⁰⁵³⁹ is an apocalyptic number.

180539 is a deficient number, since it is larger than the sum of its proper divisors (1).

180539 is an equidigital number, since it uses as much as digits as its factorization.

180539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 180539 is about 424.8988114834. The cubic root of 180539 is about 56.5184631752.

It can be divided in two parts, 180 and 539, that multiplied together give a triangular number (97020 = T₄₄₀).

The spelling of 180539 in words is "one hundred eighty thousand, five hundred thirty-nine".