549656973 has 12 divisors (see below), whose sum is σ = 800976540. Its totient is φ = 363194496.

The previous prime is 549656929. The next prime is 549657071. The reversal of 549656973 is 379656945.

549656973 is a `hidden beast` number, since 5 + 4 + 9 + 6 + 569 + 73 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 246270249 + 303386724 = 15693^2 + 17418^2 .

It is not a de Polignac number, because 549656973 - 2⁸ = 549656717 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549656273) 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, 269218 + ... + 271251.

It is an arithmetic number, because the mean of its divisors is an integer number (66748045).

Almost surely, 2^549656973 is an apocalyptic number.

It is an amenable number.

549656973 is a deficient number, since it is larger than the sum of its proper divisors (251319567).

549656973 is a wasteful number, since it uses less digits than its factorization.

549656973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540588 (or 540585 counting only the distinct ones).

The product of its digits is 6123600, while the sum is 54.

The square root of 549656973 is about 23444.7642982394. The cubic root of 549656973 is about 819.1509022573.

The spelling of 549656973 in words is "five hundred forty-nine million, six hundred fifty-six thousand, nine hundred seventy-three".