115517189 has 2 divisors, whose sum is σ = 115517190. Its totient is φ = 115517188.

The previous prime is 115517147. The next prime is 115517231. The reversal of 115517189 is 981715511.

It is a balanced prime because it is at equal distance from previous prime (115517147) and next prime (115517231).

It can be written as a sum of positive squares in only one way, i.e., 113252164 + 2265025 = 10642^2 + 1505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115517189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115517119) 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 as a sum of consecutive naturals, namely, 57758594 + 57758595.

It is an arithmetic number, because the mean of its divisors is an integer number (57758595).

Almost surely, 2^115517189 is an apocalyptic number.

It is an amenable number.

115517189 is a deficient number, since it is larger than the sum of its proper divisors (1).

115517189 is an equidigital number, since it uses as much as digits as its factorization.

115517189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 38.

The square root of 115517189 is about 10747.8923050057. The cubic root of 115517189 is about 487.0223262339.

The spelling of 115517189 in words is "one hundred fifteen million, five hundred seventeen thousand, one hundred eighty-nine".