548865440 has 48 divisors (see below), whose sum is σ = 1302594048. Its totient is φ = 218547456.

The previous prime is 548865439. The next prime is 548865461. The reversal of 548865440 is 44568845.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 548865391 and 548865400.

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 7 ways as a sum of consecutive naturals, for example, 27989 + ... + 43371.

It is an arithmetic number, because the mean of its divisors is an integer number (27137376).

Almost surely, 2^548865440 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 548865440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (651297024).

548865440 is an abundant number, since it is smaller than the sum of its proper divisors (753728608).

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

548865440 is a wasteful number, since it uses less digits than its factorization.

548865440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15621 (or 15613 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 44.

The square root of 548865440 is about 23427.8774113235. The cubic root of 548865440 is about 818.7575075356.

The spelling of 548865440 in words is "five hundred forty-eight million, eight hundred sixty-five thousand, four hundred forty".