5505550909 has 2 divisors, whose sum is σ = 5505550910. Its totient is φ = 5505550908.

The previous prime is 5505550891. The next prime is 5505550931. The reversal of 5505550909 is 9090555055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5243208100 + 262342809 = 72410^2 + 16197^2 .

It is a cyclic number.

It is not a de Polignac number, because 5505550909 - 2¹⁵ = 5505518141 is a prime.

It is a super-2 number, since 2×5505550909² = 60622181623181452562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5505550949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2752775454 + 2752775455.

It is an arithmetic number, because the mean of its divisors is an integer number (2752775455).

Almost surely, 2^5505550909 is an apocalyptic number.

It is an amenable number.

5505550909 is a deficient number, since it is larger than the sum of its proper divisors (1).

5505550909 is an equidigital number, since it uses as much as digits as its factorization.

5505550909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 253125, while the sum is 43.

The square root of 5505550909 is about 74199.3996539056. The cubic root of 5505550909 is about 1765.7678056438.

The spelling of 5505550909 in words is "five billion, five hundred five million, five hundred fifty thousand, nine hundred nine".