549105489 has 27 divisors (see below), whose sum is σ = 811752123. Its totient is φ = 357681312.

The previous prime is 549105467. The next prime is 549105521. The reversal of 549105489 is 984501945.

The square root of 549105489 is 23433.

It is a perfect power (a square), and thus also a powerful number.

549105489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 311699025 + 237406464 = 17655^2 + 15408^2 .

It is not a de Polignac number, because 549105489 - 2¹¹ = 549103441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (549145489) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5131774 + ... + 5131880.

Almost surely, 2^549105489 is an apocalyptic number.

549105489 is the 23433-rd square number.

549105489 is the 11717-th centered octagonal number.

It is an amenable number.

549105489 is a deficient number, since it is larger than the sum of its proper divisors (262646634).

549105489 is an equidigital number, since it uses as much as digits as its factorization.

549105489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The cubic root of 549105489 is about 818.8768526797.

The spelling of 549105489 in words is "five hundred forty-nine million, one hundred five thousand, four hundred eighty-nine".