115805587 has 2 divisors, whose sum is σ = 115805588. Its totient is φ = 115805586.

The previous prime is 115805567. The next prime is 115805609. The reversal of 115805587 is 785508511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115805587 - 2¹¹ = 115803539 is a prime.

It is not a weakly prime, because it can be changed into another prime (115805527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57902793 + 57902794.

It is an arithmetic number, because the mean of its divisors is an integer number (57902794).

Almost surely, 2^115805587 is an apocalyptic number.

115805587 is a deficient number, since it is larger than the sum of its proper divisors (1).

115805587 is an equidigital number, since it uses as much as digits as its factorization.

115805587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56000, while the sum is 40.

The square root of 115805587 is about 10761.3004325685. The cubic root of 115805587 is about 487.4272862839.

The spelling of 115805587 in words is "one hundred fifteen million, eight hundred five thousand, five hundred eighty-seven".