549020 has 24 divisors (see below), whose sum is σ = 1168944. Its totient is φ = 216576.

The previous prime is 549019. The next prime is 549023. The reversal of 549020 is 20945.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a nialpdrome in base 7.

It is a zygodrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 548983 and 549001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1799 + ... + 2081.

It is an arithmetic number, because the mean of its divisors is an integer number (48706).

2⁵⁴⁹⁰²⁰ is an apocalyptic number.

It is an amenable number.

549020 is an abundant number, since it is smaller than the sum of its proper divisors (619924).

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

549020 is a wasteful number, since it uses less digits than its factorization.

549020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 549020 is about 740.9588382630. The cubic root of 549020 is about 81.8834354108.

Adding to 549020 its reverse (20945), we get a palindrome (569965).

The spelling of 549020 in words is "five hundred forty-nine thousand, twenty".