115405543 has 4 divisors (see below), whose sum is σ = 125896968. Its totient is φ = 104914120.

The previous prime is 115405541. The next prime is 115405547. The reversal of 115405543 is 345504511.

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 115405543 - 2¹ = 115405541 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 (115405541) 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, 5245696 + ... + 5245717.

It is an arithmetic number, because the mean of its divisors is an integer number (31474242).

Almost surely, 2^115405543 is an apocalyptic number.

115405543 is a deficient number, since it is larger than the sum of its proper divisors (10491425).

115405543 is a wasteful number, since it uses less digits than its factorization.

115405543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10491424.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 115405543 is about 10742.6971939081. The cubic root of 115405543 is about 486.8653752156.

The spelling of 115405543 in words is "one hundred fifteen million, four hundred five thousand, five hundred forty-three".