550115009 has 2 divisors, whose sum is σ = 550115010. Its totient is φ = 550115008.

The previous prime is 550114991. The next prime is 550115023. The reversal of 550115009 is 900511055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 545362609 + 4752400 = 23353^2 + 2180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550115009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (550105009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275057504 + 275057505.

It is an arithmetic number, because the mean of its divisors is an integer number (275057505).

Almost surely, 2^550115009 is an apocalyptic number.

It is an amenable number.

550115009 is a deficient number, since it is larger than the sum of its proper divisors (1).

550115009 is an equidigital number, since it uses as much as digits as its factorization.

550115009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1125, while the sum is 26.

The square root of 550115009 is about 23454.5306710665. The cubic root of 550115009 is about 819.3783752993.

The spelling of 550115009 in words is "five hundred fifty million, one hundred fifteen thousand, nine".