550005639 has 8 divisors (see below), whose sum is σ = 736630272. Its totient is φ = 365025720.

The previous prime is 550005623. The next prime is 550005667. The reversal of 550005639 is 936500055.

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

It is not a de Polignac number, because 550005639 - 2⁴ = 550005623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550005439) 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, 410397 + ... + 411734.

It is an arithmetic number, because the mean of its divisors is an integer number (92078784).

Almost surely, 2^550005639 is an apocalyptic number.

550005639 is a deficient number, since it is larger than the sum of its proper divisors (186624633).

550005639 is a wasteful number, since it uses less digits than its factorization.

550005639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822357.

The product of its (nonzero) digits is 20250, while the sum is 33.

The square root of 550005639 is about 23452.1990226929. The cubic root of 550005639 is about 819.3240706836.

The spelling of 550005639 in words is "five hundred fifty million, five thousand, six hundred thirty-nine".