550665505 has 16 divisors (see below), whose sum is σ = 749085120. Its totient is φ = 385242048.

The previous prime is 550665503. The next prime is 550665509. The reversal of 550665505 is 505566055.

It is a cyclic number.

It is not a de Polignac number, because 550665505 - 2¹ = 550665503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550665503) 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 in 15 ways as a sum of consecutive naturals, for example, 221707 + ... + 224176.

It is an arithmetic number, because the mean of its divisors is an integer number (46817820).

Almost surely, 2^550665505 is an apocalyptic number.

It is an amenable number.

550665505 is a deficient number, since it is larger than the sum of its proper divisors (198419615).

550665505 is a wasteful number, since it uses less digits than its factorization.

550665505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445920.

The product of its (nonzero) digits is 112500, while the sum is 37.

The square root of 550665505 is about 23466.2631238977. The cubic root of 550665505 is about 819.6515994647.

The spelling of 550665505 in words is "five hundred fifty million, six hundred sixty-five thousand, five hundred five".