550117209 has 4 divisors (see below), whose sum is σ = 733489616. Its totient is φ = 366744804.

The previous prime is 550117201. The next prime is 550117231. The reversal of 550117209 is 902711055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 550117209 - 2³ = 550117201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550117201) 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, 91686199 + ... + 91686204.

It is an arithmetic number, because the mean of its divisors is an integer number (183372404).

Almost surely, 2^550117209 is an apocalyptic number.

It is an amenable number.

550117209 is a deficient number, since it is larger than the sum of its proper divisors (183372407).

550117209 is a wasteful number, since it uses less digits than its factorization.

550117209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183372406.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 550117209 is about 23454.5775702740. The cubic root of 550117209 is about 819.3794675739.

The spelling of 550117209 in words is "five hundred fifty million, one hundred seventeen thousand, two hundred nine".