548391 has 8 divisors (see below), whose sum is σ = 745200. Its totient is φ = 358592.

The previous prime is 548371. The next prime is 548393. The reversal of 548391 is 193845.

548391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 548391 - 2⁷ = 548263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (548393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1566 + ... + 1883.

It is an arithmetic number, because the mean of its divisors is an integer number (93150).

2⁵⁴⁸³⁹¹ is an apocalyptic number.

548391 is a deficient number, since it is larger than the sum of its proper divisors (196809).

548391 is a wasteful number, since it uses less digits than its factorization.

548391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3505.

The product of its digits is 4320, while the sum is 30.

The square root of 548391 is about 740.5342665941. The cubic root of 548391 is about 81.8521527844.

It can be divided in two parts, 548 and 391, that added together give a palindrome (939).

The spelling of 548391 in words is "five hundred forty-eight thousand, three hundred ninety-one".