550066 has 12 divisors (see below), whose sum is σ = 907326. Its totient is φ = 249920.

The previous prime is 550063. The next prime is 550073. The reversal of 550066 is 660055.

It can be written as a sum of positive squares in only one way, i.e., 366025 + 184041 = 605^2 + 429^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (550061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 895 + ... + 1378.

2⁵⁵⁰⁰⁶⁶ is an apocalyptic number.

550066 is a deficient number, since it is larger than the sum of its proper divisors (357260).

550066 is a wasteful number, since it uses less digits than its factorization.

550066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297 (or 2286 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 550066 is about 741.6643445657. The cubic root of 550066 is about 81.9354042141.

Adding to 550066 its reverse (660055), we get a palindrome (1210121).

The spelling of 550066 in words is "five hundred fifty thousand, sixty-six".