549822 has 64 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 134784.

The previous prime is 549817. The next prime is 549833. The reversal of 549822 is 228945.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 549822.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 549822.

It is an unprimeable 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 in 31 ways as a sum of consecutive naturals, for example, 10348 + ... + 10400.

It is an arithmetic number, because the mean of its divisors is an integer number (22680).

2⁵⁴⁹⁸²² is an apocalyptic number.

It is a pronic number, being equal to 741×742.

It is a practical number, because each smaller number is the sum of distinct divisors of 549822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725760).

549822 is an abundant number, since it is smaller than the sum of its proper divisors (901698).

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

549822 is a wasteful number, since it uses less digits than its factorization.

549822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97.

The product of its digits is 5760, while the sum is 30.

The square root of 549822 is about 741.4998314228. The cubic root of 549822 is about 81.9232873678.

The spelling of 549822 in words is "five hundred forty-nine thousand, eight hundred twenty-two".