549382561 has 24 divisors (see below), whose sum is σ = 696596544. Its totient is φ = 429397920.

The previous prime is 549382529. The next prime is 549382567. The reversal of 549382561 is 165283945.

549382561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 549382561 - 2⁵ = 549382529 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (549382567) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47676 + ... + 58066.

It is an arithmetic number, because the mean of its divisors is an integer number (29024856).

Almost surely, 2^549382561 is an apocalyptic number.

It is an amenable number.

549382561 is a deficient number, since it is larger than the sum of its proper divisors (147213983).

549382561 is a wasteful number, since it uses less digits than its factorization.

549382561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10501 (or 10494 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The square root of 549382561 is about 23438.9112588448. The cubic root of 549382561 is about 819.0145613112.

The spelling of 549382561 in words is "five hundred forty-nine million, three hundred eighty-two thousand, five hundred sixty-one".