550173109 has 2 divisors, whose sum is σ = 550173110. Its totient is φ = 550173108.

The previous prime is 550173103. The next prime is 550173131. The reversal of 550173109 is 901371055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303526084 + 246647025 = 17422^2 + 15705^2 .

It is a cyclic number.

It is not a de Polignac number, because 550173109 - 2⁵ = 550173077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550173103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275086554 + 275086555.

It is an arithmetic number, because the mean of its divisors is an integer number (275086555).

Almost surely, 2^550173109 is an apocalyptic number.

It is an amenable number.

550173109 is a deficient number, since it is larger than the sum of its proper divisors (1).

550173109 is an equidigital number, since it uses as much as digits as its factorization.

550173109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 550173109 is about 23455.7692050378. The cubic root of 550173109 is about 819.4072203026.

The spelling of 550173109 in words is "five hundred fifty million, one hundred seventy-three thousand, one hundred nine".