550000561 has 8 divisors (see below), whose sum is σ = 600171264. Its totient is φ = 499858320.

The previous prime is 550000559. The next prime is 550000567. The reversal of 550000561 is 165000055.

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

It is a cyclic number.

It is not a de Polignac number, because 550000561 - 2¹ = 550000559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550000567) 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 7 ways as a sum of consecutive naturals, for example, 66111 + ... + 73963.

It is an arithmetic number, because the mean of its divisors is an integer number (75021408).

Almost surely, 2^550000561 is an apocalyptic number.

It is an amenable number.

550000561 is a deficient number, since it is larger than the sum of its proper divisors (50170703).

550000561 is a wasteful number, since it uses less digits than its factorization.

550000561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14231.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 550000561 is about 23452.0907596743. The cubic root of 550000561 is about 819.3215491698.

The spelling of 550000561 in words is "five hundred fifty million, five hundred sixty-one", and thus it is an aban number.