115051987 has 2 divisors, whose sum is σ = 115051988. Its totient is φ = 115051986.

The previous prime is 115051969. The next prime is 115052009. The reversal of 115051987 is 789150511.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115051987 is a prime.

It is not a weakly prime, because it can be changed into another prime (115051487) 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 as a sum of consecutive naturals, namely, 57525993 + 57525994.

It is an arithmetic number, because the mean of its divisors is an integer number (57525994).

Almost surely, 2^115051987 is an apocalyptic number.

115051987 is a deficient number, since it is larger than the sum of its proper divisors (1).

115051987 is an equidigital number, since it uses as much as digits as its factorization.

115051987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 37.

The square root of 115051987 is about 10726.2289272605. The cubic root of 115051987 is about 486.3676802952.

The spelling of 115051987 in words is "one hundred fifteen million, fifty-one thousand, nine hundred eighty-seven".