115543011 has 8 divisors (see below), whose sum is σ = 154550800. Its totient is φ = 76781952.

The previous prime is 115542997. The next prime is 115543049. The reversal of 115543011 is 110345511.

It is a happy number.

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

It is not a de Polignac number, because 115543011 - 2⁷ = 115542883 is a prime.

It is a super-2 number, since 2×115543011² = 26700374781892242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115543411) 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, 60586 + ... + 62463.

It is an arithmetic number, because the mean of its divisors is an integer number (19318850).

Almost surely, 2^115543011 is an apocalyptic number.

115543011 is a deficient number, since it is larger than the sum of its proper divisors (39007789).

115543011 is a wasteful number, since it uses less digits than its factorization.

115543011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123365.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 115543011 is about 10749.0934966629. The cubic root of 115543011 is about 487.0586121861.

Adding to 115543011 its reverse (110345511), we get a palindrome (225888522).

The spelling of 115543011 in words is "one hundred fifteen million, five hundred forty-three thousand, eleven".