550005543 has 24 divisors (see below), whose sum is σ = 803410608. Its totient is φ = 362558592.

The previous prime is 550005527. The next prime is 550005551. The reversal of 550005543 is 345500055.

It is not a de Polignac number, because 550005543 - 2⁴ = 550005527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550005583) 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 23 ways as a sum of consecutive naturals, for example, 377805 + ... + 379257.

It is an arithmetic number, because the mean of its divisors is an integer number (33475442).

Almost surely, 2^550005543 is an apocalyptic number.

550005543 is a deficient number, since it is larger than the sum of its proper divisors (253405065).

550005543 is a wasteful number, since it uses less digits than its factorization.

550005543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903 (or 1900 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 550005543 is about 23452.1969759765. The cubic root of 550005543 is about 819.3240230143.

Adding to 550005543 its reverse (345500055), we get a palindrome (895505598).

The spelling of 550005543 in words is "five hundred fifty million, five thousand, five hundred forty-three".