550563 has 16 divisors (see below), whose sum is σ = 833280. Its totient is φ = 320544.

The previous prime is 550553. The next prime is 550577. The reversal of 550563 is 365055.

It is a Cunningham number, because it is equal to 742²-1.

It is not a de Polignac number, because 550563 - 2⁵ = 550531 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370 + ... + 1112.

It is an arithmetic number, because the mean of its divisors is an integer number (52080).

2⁵⁵⁰⁵⁶³ is an apocalyptic number.

550563 is a deficient number, since it is larger than the sum of its proper divisors (282717).

550563 is a wasteful number, since it uses less digits than its factorization.

550563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 550563 is about 741.9993261452. Note that the first 3 decimals coincide. The cubic root of 550563 is about 81.9600737613.

The spelling of 550563 in words is "five hundred fifty thousand, five hundred sixty-three".