115571117 has 8 divisors (see below), whose sum is σ = 122738616. Its totient is φ = 108444672.

The previous prime is 115571107. The next prime is 115571153. The reversal of 115571117 is 711175511.

It can be written as a sum of positive squares in 4 ways, for example, as 58583716 + 56987401 = 7654^2 + 7549^2 .

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 115571117 - 2¹⁰ = 115570093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115571117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115571107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4358 + ... + 15815.

It is an arithmetic number, because the mean of its divisors is an integer number (15342327).

Almost surely, 2^115571117 is an apocalyptic number.

115571117 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

115571117 is a deficient number, since it is larger than the sum of its proper divisors (7167499).

115571117 is a wasteful number, since it uses less digits than its factorization.

115571117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20527.

The product of its digits is 1225, while the sum is 29.

The square root of 115571117 is about 10750.4007832266. The cubic root of 115571117 is about 487.0981015486.

The spelling of 115571117 in words is "one hundred fifteen million, five hundred seventy-one thousand, one hundred seventeen".