115981745 has 8 divisors (see below), whose sum is σ = 151830720. Its totient is φ = 84350320.

The previous prime is 115981729. The next prime is 115981753. The reversal of 115981745 is 547189511.

It is a happy number.

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

It is not a de Polignac number, because 115981745 - 2⁴ = 115981729 is a prime.

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, 1054325 + ... + 1054434.

It is an arithmetic number, because the mean of its divisors is an integer number (18978840).

Almost surely, 2^115981745 is an apocalyptic number.

It is an amenable number.

115981745 is a deficient number, since it is larger than the sum of its proper divisors (35848975).

115981745 is a wasteful number, since it uses less digits than its factorization.

115981745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108775.

The product of its digits is 50400, while the sum is 41.

The square root of 115981745 is about 10769.4821138252. The cubic root of 115981745 is about 487.6743115422.

The spelling of 115981745 in words is "one hundred fifteen million, nine hundred eighty-one thousand, seven hundred forty-five".