115281805 has 8 divisors (see below), whose sum is σ = 138776472. Its totient is φ = 91933248.

The previous prime is 115281799. The next prime is 115281821. The reversal of 115281805 is 508182511.

It can be written as a sum of positive squares in 4 ways, for example, as 10055241 + 105226564 = 3171^2 + 10258^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 115281805 - 2¹¹ = 115279757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 34782 + ... + 37951.

It is an arithmetic number, because the mean of its divisors is an integer number (17347059).

Almost surely, 2^115281805 is an apocalyptic number.

It is an amenable number.

115281805 is a deficient number, since it is larger than the sum of its proper divisors (23494667).

115281805 is an equidigital number, since it uses as much as digits as its factorization.

115281805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73055.

The product of its (nonzero) digits is 3200, while the sum is 31.

The square root of 115281805 is about 10736.9364811384. The cubic root of 115281805 is about 486.6913070550.

The spelling of 115281805 in words is "one hundred fifteen million, two hundred eighty-one thousand, eight hundred five".