550166999 has 4 divisors (see below), whose sum is σ = 552111336. Its totient is φ = 548222664.

The previous prime is 550166989. The next prime is 550167011. The reversal of 550166999 is 999661055.

550166999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550166999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550166959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 971744 + ... + 972309.

It is an arithmetic number, because the mean of its divisors is an integer number (138027834).

Almost surely, 2^550166999 is an apocalyptic number.

550166999 is a deficient number, since it is larger than the sum of its proper divisors (1944337).

550166999 is a wasteful number, since it uses less digits than its factorization.

550166999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944336.

The product of its (nonzero) digits is 656100, while the sum is 50.

The square root of 550166999 is about 23455.6389595338. The cubic root of 550166999 is about 819.4041869563.

The spelling of 550166999 in words is "five hundred fifty million, one hundred sixty-six thousand, nine hundred ninety-nine".