549932661 has 6 divisors (see below), whose sum is σ = 794347190. Its totient is φ = 366621768.

The previous prime is 549932641. The next prime is 549932681. The reversal of 549932661 is 166239945.

549932661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (549932641) and next prime (549932681).

It can be written as a sum of positive squares in only one way, i.e., 441252036 + 108680625 = 21006^2 + 10425^2 .

It is not a de Polignac number, because 549932661 - 2⁷ = 549932533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549932641) 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, 30551806 + ... + 30551823.

Almost surely, 2^549932661 is an apocalyptic number.

It is an amenable number.

549932661 is a deficient number, since it is larger than the sum of its proper divisors (244414529).

549932661 is a wasteful number, since it uses less digits than its factorization.

549932661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61103635 (or 61103632 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 549932661 is about 23450.6430828666. The cubic root of 549932661 is about 819.2878314935.

The spelling of 549932661 in words is "five hundred forty-nine million, nine hundred thirty-two thousand, six hundred sixty-one".