115665151 has 8 divisors (see below), whose sum is σ = 132368544. Its totient is φ = 99006720.

The previous prime is 115665113. The next prime is 115665191. The reversal of 115665151 is 151566511.

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 115665151 - 2⁹ = 115664639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115665101) 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, 5530 + ... + 16183.

It is an arithmetic number, because the mean of its divisors is an integer number (16546068).

Almost surely, 2^115665151 is an apocalyptic number.

115665151 is a deficient number, since it is larger than the sum of its proper divisors (16703393).

115665151 is an equidigital number, since it uses as much as digits as its factorization.

115665151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22481.

The product of its digits is 4500, while the sum is 31.

The square root of 115665151 is about 10754.7734053303. The cubic root of 115665151 is about 487.2301742411.

The spelling of 115665151 in words is "one hundred fifteen million, six hundred sixty-five thousand, one hundred fifty-one".