550661211 has 24 divisors (see below), whose sum is σ = 838206720. Its totient is φ = 347394096.

The previous prime is 550661207. The next prime is 550661261. The reversal of 550661211 is 112166055.

It is a happy number.

It is not a de Polignac number, because 550661211 - 2² = 550661207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550661261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 262810 + ... + 264896.

It is an arithmetic number, because the mean of its divisors is an integer number (34925280).

Almost surely, 2^550661211 is an apocalyptic number.

550661211 is a deficient number, since it is larger than the sum of its proper divisors (287545509).

550661211 is a wasteful number, since it uses less digits than its factorization.

550661211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3655 (or 3652 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 550661211 is about 23466.1716306687. The cubic root of 550661211 is about 819.6494689559.

The spelling of 550661211 in words is "five hundred fifty million, six hundred sixty-one thousand, two hundred eleven".