115805611 has 2 divisors, whose sum is σ = 115805612. Its totient is φ = 115805610.

The previous prime is 115805609. The next prime is 115805623. The reversal of 115805611 is 116508511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115805611 - 2¹ = 115805609 is a prime.

Together with 115805609, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 115805611.

It is not a weakly prime, because it can be changed into another prime (115805111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57902805 + 57902806.

It is an arithmetic number, because the mean of its divisors is an integer number (57902806).

Almost surely, 2^115805611 is an apocalyptic number.

115805611 is a deficient number, since it is larger than the sum of its proper divisors (1).

115805611 is an equidigital number, since it uses as much as digits as its factorization.

115805611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 28.

The square root of 115805611 is about 10761.3015476754. The cubic root of 115805611 is about 487.4273199560.

The spelling of 115805611 in words is "one hundred fifteen million, eight hundred five thousand, six hundred eleven".