115717121 has 8 divisors (see below), whose sum is σ = 124717824. Its totient is φ = 106730640.

The previous prime is 115717103. The next prime is 115717207. The reversal of 115717121 is 121717511.

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 115717121 - 2⁶ = 115717057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115713121) 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, 18416 + ... + 23886.

It is an arithmetic number, because the mean of its divisors is an integer number (15589728).

Almost surely, 2^115717121 is an apocalyptic number.

It is an amenable number.

115717121 is a deficient number, since it is larger than the sum of its proper divisors (9000703).

115717121 is a wasteful number, since it uses less digits than its factorization.

115717121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7111.

The product of its digits is 490, while the sum is 26.

The square root of 115717121 is about 10757.1892704368. The cubic root of 115717121 is about 487.3031364672.

The spelling of 115717121 in words is "one hundred fifteen million, seven hundred seventeen thousand, one hundred twenty-one".