115543215 has 12 divisors (see below), whose sum is σ = 200274984. Its totient is φ = 61623024.

The previous prime is 115543189. The next prime is 115543229. The reversal of 115543215 is 512345511.

115543215 is a `hidden beast` number, since 115 + 543 + 2 + 1 + 5 = 666.

It is not a de Polignac number, because 115543215 - 2⁶ = 115543151 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1283769 + ... + 1283858.

It is an arithmetic number, because the mean of its divisors is an integer number (16689582).

Almost surely, 2^115543215 is an apocalyptic number.

115543215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115543215 is a deficient number, since it is larger than the sum of its proper divisors (84731769).

115543215 is a wasteful number, since it uses less digits than its factorization.

115543215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567638 (or 2567635 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 115543215 is about 10749.1029858310. The cubic root of 115543215 is about 487.0588988323.

Adding to 115543215 its reverse (512345511), we get a palindrome (627888726).

The spelling of 115543215 in words is "one hundred fifteen million, five hundred forty-three thousand, two hundred fifteen".