549450566 has 8 divisors (see below), whose sum is σ = 941915280. Its totient is φ = 235478808.

The previous prime is 549450563. The next prime is 549450571. The reversal of 549450566 is 665054945.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549450563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19623221 + ... + 19623248.

It is an arithmetic number, because the mean of its divisors is an integer number (117739410).

Almost surely, 2^549450566 is an apocalyptic number.

549450566 is a deficient number, since it is larger than the sum of its proper divisors (392464714).

549450566 is a wasteful number, since it uses less digits than its factorization.

549450566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39246478.

The product of its (nonzero) digits is 648000, while the sum is 44.

The square root of 549450566 is about 23440.3618999366. The cubic root of 549450566 is about 819.0483536636.

The spelling of 549450566 in words is "five hundred forty-nine million, four hundred fifty thousand, five hundred sixty-six".