550506 has 32 divisors (see below), whose sum is σ = 1267200. Its totient is φ = 157680.

The previous prime is 550489. The next prime is 550513. The reversal of 550506 is 605055.

It is a congruent number.

It is an unprimeable number.

550506 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1035 + ... + 1473.

It is an arithmetic number, because the mean of its divisors is an integer number (39600).

2⁵⁵⁰⁵⁰⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (633600).

550506 is an abundant number, since it is smaller than the sum of its proper divisors (716694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

550506 is a wasteful number, since it uses less digits than its factorization.

550506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 550506 is about 741.9609154127. The cubic root of 550506 is about 81.9572452110.

The spelling of 550506 in words is "five hundred fifty thousand, five hundred six".