548220 has 24 divisors (see below), whose sum is σ = 1535184. Its totient is φ = 146176.

The previous prime is 548213. The next prime is 548221. The reversal of 548220 is 22845.

548220 = 97² + 98² + ... + 136².

It is a nialpdrome in base 7.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (548221) by changing a digit.

548220 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 in 7 ways as a sum of consecutive naturals, for example, 4509 + ... + 4628.

It is an arithmetic number, because the mean of its divisors is an integer number (63966).

2⁵⁴⁸²²⁰ is an apocalyptic number.

It is an amenable number.

548220 is an abundant number, since it is smaller than the sum of its proper divisors (986964).

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

548220 is a wasteful number, since it uses less digits than its factorization.

548220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9149 (or 9147 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 548220 is about 740.4188004096. The cubic root of 548220 is about 81.8436441515.

The spelling of 548220 in words is "five hundred forty-eight thousand, two hundred twenty".