550454566 has 4 divisors (see below), whose sum is σ = 825681852. Its totient is φ = 275227282.

The previous prime is 550454563. The next prime is 550454573. The reversal of 550454566 is 665454055.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550454563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137613640 + ... + 137613643.

It is an arithmetic number, because the mean of its divisors is an integer number (206420463).

Almost surely, 2^550454566 is an apocalyptic number.

550454566 is a deficient number, since it is larger than the sum of its proper divisors (275227286).

550454566 is a wasteful number, since it uses less digits than its factorization.

550454566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275227285.

The product of its (nonzero) digits is 360000, while the sum is 40.

The square root of 550454566 is about 23461.7681771856. The cubic root of 550454566 is about 819.5469269860.

The spelling of 550454566 in words is "five hundred fifty million, four hundred fifty-four thousand, five hundred sixty-six".