50553449809 has 2 divisors, whose sum is σ = 50553449810. Its totient is φ = 50553449808.

The previous prime is 50553449783. The next prime is 50553449813. The reversal of 50553449809 is 90894435505.

50553449809 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., 46974060225 + 3579389584 = 216735^2 + 59828^2 .

It is a cyclic number.

It is not a de Polignac number, because 50553449809 - 2¹⁷ = 50553318737 is a prime.

It is not a weakly prime, because it can be changed into another prime (50553447809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25276724904 + 25276724905.

It is an arithmetic number, because the mean of its divisors is an integer number (25276724905).

Almost surely, 2^50553449809 is an apocalyptic number.

It is an amenable number.

50553449809 is a deficient number, since it is larger than the sum of its proper divisors (1).

50553449809 is an equidigital number, since it uses as much as digits as its factorization.

50553449809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888000, while the sum is 52.

The spelling of 50553449809 in words is "fifty billion, five hundred fifty-three million, four hundred forty-nine thousand, eight hundred nine".