550655566 has 4 divisors (see below), whose sum is σ = 825983352. Its totient is φ = 275327782.

The previous prime is 550655557. The next prime is 550655593. The reversal of 550655566 is 665556055.

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

It is a congruent number.

It is an unprimeable number.

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, 137663890 + ... + 137663893.

It is an arithmetic number, because the mean of its divisors is an integer number (206495838).

Almost surely, 2^550655566 is an apocalyptic number.

550655566 is a deficient number, since it is larger than the sum of its proper divisors (275327786).

550655566 is a wasteful number, since it uses less digits than its factorization.

550655566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275327785.

The product of its (nonzero) digits is 675000, while the sum is 43.

The square root of 550655566 is about 23466.0513508345. The cubic root of 550655566 is about 819.6466681188.

The spelling of 550655566 in words is "five hundred fifty million, six hundred fifty-five thousand, five hundred sixty-six".