549363841 has 4 divisors (see below), whose sum is σ = 591622612. Its totient is φ = 507105072.

The previous prime is 549363817. The next prime is 549363847. The reversal of 549363841 is 148363945.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 286794225 + 262569616 = 16935^2 + 16204^2 .

It is a cyclic number.

It is not a de Polignac number, because 549363841 - 2⁷ = 549363713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549363847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21129366 + ... + 21129391.

It is an arithmetic number, because the mean of its divisors is an integer number (147905653).

Almost surely, 2^549363841 is an apocalyptic number.

It is an amenable number.

549363841 is a deficient number, since it is larger than the sum of its proper divisors (42258771).

549363841 is a wasteful number, since it uses less digits than its factorization.

549363841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42258770.

The product of its digits is 311040, while the sum is 43.

The square root of 549363841 is about 23438.5119194884. The cubic root of 549363841 is about 819.0052586699.

The spelling of 549363841 in words is "five hundred forty-nine million, three hundred sixty-three thousand, eight hundred forty-one".