20050015057 has 2 divisors, whose sum is σ = 20050015058. Its totient is φ = 20050015056.

The previous prime is 20050015043. The next prime is 20050015081. The reversal of 20050015057 is 75051005002.

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., 16715645521 + 3334369536 = 129289^2 + 57744^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20050015057 is a prime.

It is not a weakly prime, because it can be changed into another prime (20050015087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10025007528 + 10025007529.

It is an arithmetic number, because the mean of its divisors is an integer number (10025007529).

Almost surely, 2^20050015057 is an apocalyptic number.

It is an amenable number.

20050015057 is a deficient number, since it is larger than the sum of its proper divisors (1).

20050015057 is an equidigital number, since it uses as much as digits as its factorization.

20050015057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1750, while the sum is 25.

The spelling of 20050015057 in words is "twenty billion, fifty million, fifteen thousand, fifty-seven".