550543659 has 4 divisors (see below), whose sum is σ = 734058216. Its totient is φ = 367029104.

The previous prime is 550543633. The next prime is 550543681. The reversal of 550543659 is 956345055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 550543659 - 2⁸ = 550543403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 550543659.

It is not an unprimeable number, because it can be changed into a prime (550543619) 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 3 ways as a sum of consecutive naturals, for example, 91757274 + ... + 91757279.

It is an arithmetic number, because the mean of its divisors is an integer number (183514554).

Almost surely, 2^550543659 is an apocalyptic number.

550543659 is a deficient number, since it is larger than the sum of its proper divisors (183514557).

550543659 is a wasteful number, since it uses less digits than its factorization.

550543659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183514556.

The product of its (nonzero) digits is 405000, while the sum is 42.

The square root of 550543659 is about 23463.6667850530. Note that the first 3 decimals coincide. The cubic root of 550543659 is about 819.5911401145.

The spelling of 550543659 in words is "five hundred fifty million, five hundred forty-three thousand, six hundred fifty-nine".