550366 has 4 divisors (see below), whose sum is σ = 825552. Its totient is φ = 275182.

The previous prime is 550351. The next prime is 550369. The reversal of 550366 is 663055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 663055 = 5 ⋅132611.

It is a self number, because there is not a number n which added to its sum of digits gives 550366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550369) by changing a digit.

550366 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 137590 + ... + 137593.

It is an arithmetic number, because the mean of its divisors is an integer number (206388).

2⁵⁵⁰³⁶⁶ is an apocalyptic number.

550366 is a deficient number, since it is larger than the sum of its proper divisors (275186).

550366 is a wasteful number, since it uses less digits than its factorization.

550366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275185.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 550366 is about 741.8665648215. The cubic root of 550366 is about 81.9502970657.

The spelling of 550366 in words is "five hundred fifty thousand, three hundred sixty-six".