50921235161 has 2 divisors, whose sum is σ = 50921235162. Its totient is φ = 50921235160.

The previous prime is 50921235137. The next prime is 50921235187. The reversal of 50921235161 is 16153212905.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48973690000 + 1947545161 = 221300^2 + 44131^2 .

It is a cyclic number.

It is not a de Polignac number, because 50921235161 - 2²² = 50917040857 is a prime.

It is not a weakly prime, because it can be changed into another prime (50921235121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25460617580 + 25460617581.

It is an arithmetic number, because the mean of its divisors is an integer number (25460617581).

Almost surely, 2^50921235161 is an apocalyptic number.

It is an amenable number.

50921235161 is a deficient number, since it is larger than the sum of its proper divisors (1).

50921235161 is an equidigital number, since it uses as much as digits as its factorization.

50921235161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 35.

The spelling of 50921235161 in words is "fifty billion, nine hundred twenty-one million, two hundred thirty-five thousand, one hundred sixty-one".