548009 has 12 divisors (see below), whose sum is σ = 689472. Its totient is φ = 426360.

The previous prime is 548003. The next prime is 548039. The reversal of 548009 is 900845.

It is not a de Polignac number, because 548009 - 2⁸ = 547753 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (548003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 524 + ... + 1170.

It is an arithmetic number, because the mean of its divisors is an integer number (57456).

2⁵⁴⁸⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

548009 is a deficient number, since it is larger than the sum of its proper divisors (141463).

548009 is a wasteful number, since it uses less digits than its factorization.

548009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 548009 is about 740.2762997692. The cubic root of 548009 is about 81.8331427561.

Subtracting 548009 from its reverse (900845), we obtain a square (352836 = 594²).

The spelling of 548009 in words is "five hundred forty-eight thousand, nine".