549120 has 144 divisors (see below), whose sum is σ = 2060352. Its totient is φ = 122880.

The previous prime is 549097. The next prime is 549121. The reversal of 549120 is 21945.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549121) by changing a digit.

549120 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, 42234 + ... + 42246.

It is an arithmetic number, because the mean of its divisors is an integer number (14308).

2⁵⁴⁹¹²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1030176).

549120 is an abundant number, since it is smaller than the sum of its proper divisors (1511232).

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

549120 is a wasteful number, since it uses less digits than its factorization.

549120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 549120 is about 741.0263153222. The cubic root of 549120 is about 81.8884065998. Note that the first 3 decimals are identical.

The spelling of 549120 in words is "five hundred forty-nine thousand, one hundred twenty".