115221715 has 8 divisors (see below), whose sum is σ = 158018400. Its totient is φ = 79009152.

The previous prime is 115221703. The next prime is 115221731. The reversal of 115221715 is 517122511.

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 115221715 - 2⁵ = 115221683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115221715.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1645990 + ... + 1646059.

It is an arithmetic number, because the mean of its divisors is an integer number (19752300).

Almost surely, 2^115221715 is an apocalyptic number.

115221715 is a deficient number, since it is larger than the sum of its proper divisors (42796685).

115221715 is an equidigital number, since it uses as much as digits as its factorization.

115221715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3292061.

The product of its digits is 700, while the sum is 25.

The square root of 115221715 is about 10734.1378321689. The cubic root of 115221715 is about 486.6067306455.

The spelling of 115221715 in words is "one hundred fifteen million, two hundred twenty-one thousand, seven hundred fifteen".