115039081 has 8 divisors (see below), whose sum is σ = 116191304. Its totient is φ = 113892480.

The previous prime is 115039039. The next prime is 115039103. The reversal of 115039081 is 180930511.

It can be written as a sum of positive squares in 4 ways, for example, as 13456 + 115025625 = 116^2 + 10725^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 3-Lehmer number, since φ(115039081) divides (115039081-1)³.

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 115039081 - 2⁷ = 115038953 is a prime.

It is a super-2 number, since 2×115039081² = 26467980314649122, which contains 22 as substring.

It is a deceptive number, since it divides R_115039080.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (115039681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47971 + ... + 50311.

It is an arithmetic number, because the mean of its divisors is an integer number (14523913).

It is a Poulet number, since it divides 2^115039080-1.

Almost surely, 2^115039081 is an apocalyptic number.

It is an amenable number.

115039081 is a deficient number, since it is larger than the sum of its proper divisors (1152223).

115039081 is a wasteful number, since it uses less digits than its factorization.

115039081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 115039081 is about 10725.6273010020. The cubic root of 115039081 is about 486.3494934559.

Adding to 115039081 its reverse (180930511), we get a palindrome (295969592).

The spelling of 115039081 in words is "one hundred fifteen million, thirty-nine thousand, eighty-one".