115561166 has 8 divisors (see below), whose sum is σ = 198104880. Its totient is φ = 49526208.

The previous prime is 115561163. The next prime is 115561169. The reversal of 115561166 is 661165511.

It is an interprime number because it is at equal distance from previous prime (115561163) and next prime (115561169).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115561163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4127171 + ... + 4127198.

It is an arithmetic number, because the mean of its divisors is an integer number (24763110).

Almost surely, 2^115561166 is an apocalyptic number.

115561166 is a deficient number, since it is larger than the sum of its proper divisors (82543714).

115561166 is an equidigital number, since it uses as much as digits as its factorization.

115561166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8254378.

The product of its digits is 5400, while the sum is 32.

The square root of 115561166 is about 10749.9379533093. The cubic root of 115561166 is about 487.0841209726.

The spelling of 115561166 in words is "one hundred fifteen million, five hundred sixty-one thousand, one hundred sixty-six".