115290661 has 8 divisors (see below), whose sum is σ = 117430560. Its totient is φ = 113157072.

The previous prime is 115290649. The next prime is 115290667. The reversal of 115290661 is 166092511.

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 115290661 - 2⁵ = 115290629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115290667) 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, 50991 + ... + 53203.

It is an arithmetic number, because the mean of its divisors is an integer number (14678820).

Almost surely, 2^115290661 is an apocalyptic number.

It is an amenable number.

115290661 is a deficient number, since it is larger than the sum of its proper divisors (2139899).

115290661 is an equidigital number, since it uses as much as digits as its factorization.

115290661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3155.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 115290661 is about 10737.3488813580. The cubic root of 115290661 is about 486.7037693508.

The spelling of 115290661 in words is "one hundred fifteen million, two hundred ninety thousand, six hundred sixty-one".