505550099 has 2 divisors, whose sum is σ = 505550100. Its totient is φ = 505550098.

The previous prime is 505550083. The next prime is 505550153. The reversal of 505550099 is 990055505.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505550099 - 2⁴ = 505550083 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (505553099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252775049 + 252775050.

It is an arithmetic number, because the mean of its divisors is an integer number (252775050).

Almost surely, 2^505550099 is an apocalyptic number.

505550099 is a deficient number, since it is larger than the sum of its proper divisors (1).

505550099 is an equidigital number, since it uses as much as digits as its factorization.

505550099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50625, while the sum is 38.

The square root of 505550099 is about 22484.4412650170. The cubic root of 505550099 is about 796.6264706839.

The spelling of 505550099 in words is "five hundred five million, five hundred fifty thousand, ninety-nine".