115403543 has 4 divisors (see below), whose sum is σ = 115426368. Its totient is φ = 115380720.

The previous prime is 115403539. The next prime is 115403579. The reversal of 115403543 is 345304511.

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 115403543 - 2² = 115403539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115403143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71 + ... + 15192.

It is an arithmetic number, because the mean of its divisors is an integer number (28856592).

Almost surely, 2^115403543 is an apocalyptic number.

115403543 is a deficient number, since it is larger than the sum of its proper divisors (22825).

115403543 is an equidigital number, since it uses as much as digits as its factorization.

115403543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22824.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 115403543 is about 10742.6041070124. The cubic root of 115403543 is about 486.8625627095.

The spelling of 115403543 in words is "one hundred fifteen million, four hundred three thousand, five hundred forty-three".