115565982 has 16 divisors (see below), whose sum is σ = 264150912. Its totient is φ = 33018840.

The previous prime is 115565971. The next prime is 115565987. The reversal of 115565982 is 289565511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 2751571 = 115565982 / (1 + 1 + 5 + 5 + 6 + 5 + 9 + 8 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115565987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1375744 + ... + 1375827.

It is an arithmetic number, because the mean of its divisors is an integer number (16509432).

Almost surely, 2^115565982 is an apocalyptic number.

115565982 is an abundant number, since it is smaller than the sum of its proper divisors (148584930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115565982 is a wasteful number, since it uses less digits than its factorization.

115565982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751583.

The product of its digits is 108000, while the sum is 42.

The square root of 115565982 is about 10750.1619522684. The cubic root of 115565982 is about 487.0908872726.

The spelling of 115565982 in words is "one hundred fifteen million, five hundred sixty-five thousand, nine hundred eighty-two".