548905 has 8 divisors (see below), whose sum is σ = 752832. Its totient is φ = 376368.

The previous prime is 548903. The next prime is 548909. The reversal of 548905 is 509845.

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 548905 - 2¹ = 548903 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (548903) 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, 7807 + ... + 7876.

It is an arithmetic number, because the mean of its divisors is an integer number (94104).

2⁵⁴⁸⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

548905 is a deficient number, since it is larger than the sum of its proper divisors (203927).

548905 is a wasteful number, since it uses less digits than its factorization.

548905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15695.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 548905 is about 740.8812320474. The cubic root of 548905 is about 81.8777177972.

Subtracting from 548905 its reverse (509845), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 548905 in words is "five hundred forty-eight thousand, nine hundred five".