115543553 has 8 divisors (see below), whose sum is σ = 117465600. Its totient is φ = 113634288.

The previous prime is 115543529. The next prime is 115543601. The reversal of 115543553 is 355345511.

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

It is a cyclic number.

It is not a de Polignac number, because 115543553 - 2²⁰ = 114494977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115545553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15968 + ... + 22046.

It is an arithmetic number, because the mean of its divisors is an integer number (14683200).

Almost surely, 2^115543553 is an apocalyptic number.

It is an amenable number.

115543553 is a deficient number, since it is larger than the sum of its proper divisors (1922047).

115543553 is an equidigital number, since it uses as much as digits as its factorization.

115543553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6391.

The product of its digits is 22500, while the sum is 32.

The square root of 115543553 is about 10749.1187080616. The cubic root of 115543553 is about 487.0593737650.

The spelling of 115543553 in words is "one hundred fifteen million, five hundred forty-three thousand, five hundred fifty-three".