115117187 has 4 divisors (see below), whose sum is σ = 117004416. Its totient is φ = 113229960.

The previous prime is 115117151. The next prime is 115117207. The reversal of 115117187 is 781711511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115117187 - 2⁸ = 115116931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115117087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 943523 + ... + 943644.

It is an arithmetic number, because the mean of its divisors is an integer number (29251104).

Almost surely, 2^115117187 is an apocalyptic number.

115117187 is a deficient number, since it is larger than the sum of its proper divisors (1887229).

115117187 is an equidigital number, since it uses as much as digits as its factorization.

115117187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887228.

The product of its digits is 1960, while the sum is 32.

The square root of 115117187 is about 10729.2677755754. The cubic root of 115117187 is about 486.4595378552.

Adding to 115117187 its reverse (781711511), we get a palindrome (896828698).

The spelling of 115117187 in words is "one hundred fifteen million, one hundred seventeen thousand, one hundred eighty-seven".