505050550129 has 2 divisors, whose sum is σ = 505050550130. Its totient is φ = 505050550128.

The previous prime is 505050550007. The next prime is 505050550163. The reversal of 505050550129 is 921055050505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 491997030625 + 13053519504 = 701425^2 + 114252^2 .

It is a cyclic number.

It is not a de Polignac number, because 505050550129 - 2²⁹ = 504513679217 is a prime.

It is not a weakly prime, because it can be changed into another prime (505050550429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252525275064 + 252525275065.

It is an arithmetic number, because the mean of its divisors is an integer number (252525275065).

Almost surely, 2^505050550129 is an apocalyptic number.

It is an amenable number.

505050550129 is a deficient number, since it is larger than the sum of its proper divisors (1).

505050550129 is an equidigital number, since it uses as much as digits as its factorization.

505050550129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56250, while the sum is 37.

The spelling of 505050550129 in words is "five hundred five billion, fifty million, five hundred fifty thousand, one hundred twenty-nine".