549055161 has 6 divisors (see below), whose sum is σ = 793079690. Its totient is φ = 366036768.

The previous prime is 549055153. The next prime is 549055181. The reversal of 549055161 is 161550945.

549055161 is a `hidden beast` number, since 5 + 49 + 0 + 551 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 537358761 + 11696400 = 23181^2 + 3420^2 .

It is not a de Polignac number, because 549055161 - 2³ = 549055153 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (549055181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30503056 + ... + 30503073.

Almost surely, 2^549055161 is an apocalyptic number.

It is an amenable number.

549055161 is a deficient number, since it is larger than the sum of its proper divisors (244024529).

549055161 is a wasteful number, since it uses less digits than its factorization.

549055161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61006135 (or 61006132 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 549055161 is about 23431.9261052095. The cubic root of 549055161 is about 818.8518339937.

The spelling of 549055161 in words is "five hundred forty-nine million, fifty-five thousand, one hundred sixty-one".