115523543 has 4 divisors (see below), whose sum is σ = 115602720. Its totient is φ = 115444368.

The previous prime is 115523531. The next prime is 115523563. The reversal of 115523543 is 345325511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345325511 = 79 ⋅4371209.

It is a cyclic number.

It is not a de Polignac number, because 115523543 - 2²⁰ = 114474967 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 (115523563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37358 + ... + 40331.

It is an arithmetic number, because the mean of its divisors is an integer number (28900680).

Almost surely, 2^115523543 is an apocalyptic number.

115523543 is a deficient number, since it is larger than the sum of its proper divisors (79177).

115523543 is an equidigital number, since it uses as much as digits as its factorization.

115523543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79176.

The product of its digits is 9000, while the sum is 29.

The square root of 115523543 is about 10748.1878937800. The cubic root of 115523543 is about 487.0312555923.

The spelling of 115523543 in words is "one hundred fifteen million, five hundred twenty-three thousand, five hundred forty-three".