115543873 has 4 divisors (see below), whose sum is σ = 115676500. Its totient is φ = 115411248.

The previous prime is 115543867. The next prime is 115543903. The reversal of 115543873 is 378345511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 378345511 = 521 ⋅726191.

It can be written as a sum of positive squares in 2 ways, for example, as 66781584 + 48762289 = 8172^2 + 6983^2 .

It is a cyclic number.

It is not a de Polignac number, because 115543873 - 2²¹ = 113446721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115541873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64998 + ... + 66751.

It is an arithmetic number, because the mean of its divisors is an integer number (28919125).

Almost surely, 2^115543873 is an apocalyptic number.

It is an amenable number.

115543873 is a deficient number, since it is larger than the sum of its proper divisors (132627).

115543873 is an equidigital number, since it uses as much as digits as its factorization.

115543873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132626.

The product of its digits is 50400, while the sum is 37.

The square root of 115543873 is about 10749.1335929925. The cubic root of 115543873 is about 487.0598234045.

It can be divided in two parts, 1155438 and 73, that added together give a palindrome (1155511).

The spelling of 115543873 in words is "one hundred fifteen million, five hundred forty-three thousand, eight hundred seventy-three".