115511543 has 8 divisors (see below), whose sum is σ = 137753088. Its totient is φ = 94704984.

The previous prime is 115511537. The next prime is 115511563. The reversal of 115511543 is 345115511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 115511543 - 2¹⁶ = 115446007 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 (115511503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358571 + ... + 358892.

It is an arithmetic number, because the mean of its divisors is an integer number (17219136).

Almost surely, 2^115511543 is an apocalyptic number.

115511543 is a deficient number, since it is larger than the sum of its proper divisors (22241545).

115511543 is an equidigital number, since it uses as much as digits as its factorization.

115511543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717493.

The product of its digits is 1500, while the sum is 26.

The square root of 115511543 is about 10747.6296456475. The cubic root of 115511543 is about 487.0143915624.

The spelling of 115511543 in words is "one hundred fifteen million, five hundred eleven thousand, five hundred forty-three".