550550000309 has 2 divisors, whose sum is σ = 550550000310. Its totient is φ = 550550000308.

The previous prime is 550550000281. The next prime is 550550000323. The reversal of 550550000309 is 903000055055.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 533330787025 + 17219213284 = 730295^2 + 131222^2 .

It is a cyclic number.

It is not a de Polignac number, because 550550000309 - 2⁸ = 550550000053 is a prime.

It is a Sophie Germain 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 (550550000369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275275000154 + 275275000155.

It is an arithmetic number, because the mean of its divisors is an integer number (275275000155).

Almost surely, 2^550550000309 is an apocalyptic number.

It is an amenable number.

550550000309 is a deficient number, since it is larger than the sum of its proper divisors (1).

550550000309 is an equidigital number, since it uses as much as digits as its factorization.

550550000309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16875, while the sum is 32.

The spelling of 550550000309 in words is "five hundred fifty billion, five hundred fifty million, three hundred nine", and thus it is an aban number.