550221706 has 4 divisors (see below), whose sum is σ = 825332562. Its totient is φ = 275110852.

The previous prime is 550221701. The next prime is 550221739. The reversal of 550221706 is 607122055.

550221706 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 can be written as a sum of positive squares in only one way, i.e., 550137025 + 84681 = 23455^2 + 291^2 .

It is not an unprimeable number, because it can be changed into a prime (550221701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137555425 + ... + 137555428.

Almost surely, 2^550221706 is an apocalyptic number.

550221706 is a deficient number, since it is larger than the sum of its proper divisors (275110856).

550221706 is a wasteful number, since it uses less digits than its factorization.

550221706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275110855.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 550221706 is about 23456.8051106710. The cubic root of 550221706 is about 819.4313457761.

The spelling of 550221706 in words is "five hundred fifty million, two hundred twenty-one thousand, seven hundred six".