548673221 has 4 divisors (see below), whose sum is σ = 549142944. Its totient is φ = 548203500.

The previous prime is 548673197. The next prime is 548673227. The reversal of 548673221 is 122376845.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122376845 = 5 ⋅24475369.

It is a cyclic number.

It is not a de Polignac number, because 548673221 - 2¹⁴ = 548656837 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 (548673227) 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, 233105 + ... + 235446.

It is an arithmetic number, because the mean of its divisors is an integer number (137285736).

Almost surely, 2^548673221 is an apocalyptic number.

It is an amenable number.

548673221 is a deficient number, since it is larger than the sum of its proper divisors (469723).

548673221 is a wasteful number, since it uses less digits than its factorization.

548673221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469722.

The product of its digits is 80640, while the sum is 38.

The square root of 548673221 is about 23423.7746958085. The cubic root of 548673221 is about 818.6619169387.

The spelling of 548673221 in words is "five hundred forty-eight million, six hundred seventy-three thousand, two hundred twenty-one".