55050545909 has 2 divisors, whose sum is σ = 55050545910. Its totient is φ = 55050545908.

The previous prime is 55050545903. The next prime is 55050545911. The reversal of 55050545909 is 90954505055.

55050545909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48038995684 + 7011550225 = 219178^2 + 83735^2 .

It is a cyclic number.

It is not a de Polignac number, because 55050545909 - 2¹² = 55050541813 is a prime.

It is a Sophie Germain prime.

Together with 55050545911, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55050545903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27525272954 + 27525272955.

It is an arithmetic number, because the mean of its divisors is an integer number (27525272955).

Almost surely, 2^55050545909 is an apocalyptic number.

It is an amenable number.

55050545909 is a deficient number, since it is larger than the sum of its proper divisors (1).

55050545909 is an equidigital number, since it uses as much as digits as its factorization.

55050545909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1012500, while the sum is 47.

The spelling of 55050545909 in words is "fifty-five billion, fifty million, five hundred forty-five thousand, nine hundred nine".