115707221 has 8 divisors (see below), whose sum is σ = 136502784. Its totient is φ = 95978160.

The previous prime is 115707217. The next prime is 115707247. The reversal of 115707221 is 122707511.

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 115707221 - 2² = 115707217 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 (115707521) 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, 266390 + ... + 266823.

It is an arithmetic number, because the mean of its divisors is an integer number (17062848).

Almost surely, 2^115707221 is an apocalyptic number.

It is an amenable number.

115707221 is a deficient number, since it is larger than the sum of its proper divisors (20795563).

115707221 is an equidigital number, since it uses as much as digits as its factorization.

115707221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533251.

The product of its (nonzero) digits is 980, while the sum is 26.

The square root of 115707221 is about 10756.7291032172. The cubic root of 115707221 is about 487.2892392478.

The spelling of 115707221 in words is "one hundred fifteen million, seven hundred seven thousand, two hundred twenty-one".