548789 has 4 divisors (see below), whose sum is σ = 550956. Its totient is φ = 546624.

The previous prime is 548783. The next prime is 548791. The reversal of 548789 is 987845.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 987845 = 5 ⋅197569.

It can be written as a sum of positive squares in 2 ways, for example, as 255025 + 293764 = 505^2 + 542^2 .

It is a cyclic number.

It is not a de Polignac number, because 548789 - 2⁸ = 548533 is a prime.

It is a d-powerful number, because it can be written as 5 + 4² + 7⁵ + 8 + 8³ + 9⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (548783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644 + ... + 1229.

It is an arithmetic number, because the mean of its divisors is an integer number (137739).

2⁵⁴⁸⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

548789 is a deficient number, since it is larger than the sum of its proper divisors (2167).

548789 is a wasteful number, since it uses less digits than its factorization.

548789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166.

The product of its digits is 80640, while the sum is 41.

The square root of 548789 is about 740.8029427587. The cubic root of 548789 is about 81.8719496562.

The spelling of 548789 in words is "five hundred forty-eight thousand, seven hundred eighty-nine".