20050057 has 2 divisors, whose sum is σ = 20050058. Its totient is φ = 20050056.

The previous prime is 20050039. The next prime is 20050081. The reversal of 20050057 is 75005002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17214201 + 2835856 = 4149^2 + 1684^2 .

It is a cyclic number.

It is not a de Polignac number, because 20050057 - 2¹¹ = 20048009 is a prime.

It is not a weakly prime, because it can be changed into another prime (20050027) 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, 10025028 + 10025029.

It is an arithmetic number, because the mean of its divisors is an integer number (10025029).

Almost surely, 2^20050057 is an apocalyptic number.

It is an amenable number.

20050057 is a deficient number, since it is larger than the sum of its proper divisors (1).

20050057 is an equidigital number, since it uses as much as digits as its factorization.

20050057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 20050057 is about 4477.7290002857. The cubic root of 20050057 is about 271.6680323282.

Adding to 20050057 its reverse (75005002), we get a palindrome (95055059).

The spelling of 20050057 in words is "twenty million, fifty thousand, fifty-seven".