548778 has 8 divisors (see below), whose sum is σ = 1097568. Its totient is φ = 182924.

The previous prime is 548771. The next prime is 548783. The reversal of 548778 is 877845.

It is a sphenic number, since it is the product of 3 distinct primes.

548778 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (548771) by changing a digit.

548778 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 3 ways as a sum of consecutive naturals, for example, 45726 + ... + 45737.

It is an arithmetic number, because the mean of its divisors is an integer number (137196).

2⁵⁴⁸⁷⁷⁸ is an apocalyptic number.

548778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

548778 is a wasteful number, since it uses less digits than its factorization.

548778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91468.

The product of its digits is 62720, while the sum is 39.

The square root of 548778 is about 740.7955183450. The cubic root of 548778 is about 81.8714026351.

It can be divided in two parts, 5487 and 78, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 548778 in words is "five hundred forty-eight thousand, seven hundred seventy-eight".