548457820 has 24 divisors (see below), whose sum is σ = 1179854928. Its totient is φ = 214032000.

The previous prime is 548457809. The next prime is 548457853. The reversal of 548457820 is 28754845.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333606 + ... + 335245.

It is an arithmetic number, because the mean of its divisors is an integer number (49160622).

Almost surely, 2^548457820 is an apocalyptic number.

It is an amenable number.

548457820 is an abundant number, since it is smaller than the sum of its proper divisors (631397108).

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

548457820 is a wasteful number, since it uses less digits than its factorization.

548457820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668901 (or 668899 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 43.

The square root of 548457820 is about 23419.1763305203. The cubic root of 548457820 is about 818.5547713919.

The spelling of 548457820 in words is "five hundred forty-eight million, four hundred fifty-seven thousand, eight hundred twenty".