550985 has 8 divisors (see below), whose sum is σ = 665280. Its totient is φ = 438064.

The previous prime is 550973. The next prime is 550993. The reversal of 550985 is 589055.

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 550985 - 2⁴ = 550969 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1106 + ... + 1524.

It is an arithmetic number, because the mean of its divisors is an integer number (83160).

2⁵⁵⁰⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

550985 is a deficient number, since it is larger than the sum of its proper divisors (114295).

550985 is a wasteful number, since it uses less digits than its factorization.

550985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 550985 is about 742.2836385102. The cubic root of 550985 is about 81.9810088878.

The spelling of 550985 in words is "five hundred fifty thousand, nine hundred eighty-five".