50005121 has 2 divisors, whose sum is σ = 50005122. Its totient is φ = 50005120.

The previous prime is 50005091. The next prime is 50005181. The reversal of 50005121 is 12150005.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39187600 + 10817521 = 6260^2 + 3289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50005121 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 50005096 and 50005105.

It is not a weakly prime, because it can be changed into another prime (50005181) 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, 25002560 + 25002561.

It is an arithmetic number, because the mean of its divisors is an integer number (25002561).

Almost surely, 2^50005121 is an apocalyptic number.

It is an amenable number.

50005121 is a deficient number, since it is larger than the sum of its proper divisors (1).

50005121 is an equidigital number, since it uses as much as digits as its factorization.

50005121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 50005121 is about 7071.4299119768. The cubic root of 50005121 is about 368.4157267182.

Adding to 50005121 its reverse (12150005), we get a palindrome (62155126).

The spelling of 50005121 in words is "fifty million, five thousand, one hundred twenty-one".