548551 has 4 divisors (see below), whose sum is σ = 561352. Its totient is φ = 535752.

The previous prime is 548543. The next prime is 548557. The reversal of 548551 is 155845.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 548551 - 2³ = 548543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (548557) by changing a digit.

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, 6336 + ... + 6421.

It is an arithmetic number, because the mean of its divisors is an integer number (140338).

2⁵⁴⁸⁵⁵¹ is an apocalyptic number.

548551 is a deficient number, since it is larger than the sum of its proper divisors (12801).

548551 is a wasteful number, since it uses less digits than its factorization.

548551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12800.

The product of its digits is 4000, while the sum is 28.

The square root of 548551 is about 740.6422888277. The cubic root of 548551 is about 81.8601124768.

The spelling of 548551 in words is "five hundred forty-eight thousand, five hundred fifty-one".