117539 has 2 divisors, whose sum is σ = 117540. Its totient is φ = 117538.

The previous prime is 117529. The next prime is 117541. The reversal of 117539 is 935711.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117539 is a prime.

Together with 117541, 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 (117529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58769 + 58770.

It is an arithmetic number, because the mean of its divisors is an integer number (58770).

2¹¹⁷⁵³⁹ is an apocalyptic number.

117539 is a deficient number, since it is larger than the sum of its proper divisors (1).

117539 is an equidigital number, since it uses as much as digits as its factorization.

117539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 945, while the sum is 26.

The square root of 117539 is about 342.8396126471. The cubic root of 117539 is about 48.9847238233.

It can be divided in two parts, 117 and 539, that added together give a palindrome (656).

The spelling of 117539 in words is "one hundred seventeen thousand, five hundred thirty-nine".