117081 has 6 divisors (see below), whose sum is σ = 169130. Its totient is φ = 78048.

The previous prime is 117071. The next prime is 117101. The reversal of 117081 is 180711.

It can be written as a sum of positive squares in only one way, i.e., 84681 + 32400 = 291^2 + 180^2 .

It is not a de Polignac number, because 117081 - 2⁶ = 117017 is a prime.

It is a super-2 number, since 2×117081² = 27415921122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6496 + ... + 6513.

2¹¹⁷⁰⁸¹ is an apocalyptic number.

It is an amenable number.

117081 is a deficient number, since it is larger than the sum of its proper divisors (52049).

117081 is a wasteful number, since it uses less digits than its factorization.

117081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13015 (or 13012 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 18.

The square root of 117081 is about 342.1710098766. The cubic root of 117081 is about 48.9210167228.

Adding to 117081 its reverse (180711), we get a palindrome (297792).

The spelling of 117081 in words is "one hundred seventeen thousand, eighty-one".