115543903 has 2 divisors, whose sum is σ = 115543904. Its totient is φ = 115543902.

The previous prime is 115543867. The next prime is 115543919. The reversal of 115543903 is 309345511.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (309345511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115543903 - 2²⁵ = 81989471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115543303) 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 as a sum of consecutive naturals, namely, 57771951 + 57771952.

It is an arithmetic number, because the mean of its divisors is an integer number (57771952).

Almost surely, 2^115543903 is an apocalyptic number.

115543903 is a deficient number, since it is larger than the sum of its proper divisors (1).

115543903 is an equidigital number, since it uses as much as digits as its factorization.

115543903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 115543903 is about 10749.1349884537. The cubic root of 115543903 is about 487.0598655582.

The spelling of 115543903 in words is "one hundred fifteen million, five hundred forty-three thousand, nine hundred three".