170539 has 2 divisors, whose sum is σ = 170540. Its totient is φ = 170538.

The previous prime is 170537. The next prime is 170551. The reversal of 170539 is 935071.

170539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (935071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 170539 - 2¹ = 170537 is a prime.

Together with 170537, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (170537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85269 + 85270.

It is an arithmetic number, because the mean of its divisors is an integer number (85270).

2¹⁷⁰⁵³⁹ is an apocalyptic number.

170539 is a deficient number, since it is larger than the sum of its proper divisors (1).

170539 is an equidigital number, since it uses as much as digits as its factorization.

170539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 945, while the sum is 25.

The square root of 170539 is about 412.9636787903. The cubic root of 170539 is about 55.4550673849.

The spelling of 170539 in words is "one hundred seventy thousand, five hundred thirty-nine".