500050081 has 2 divisors, whose sum is σ = 500050082. Its totient is φ = 500050080.

The previous prime is 500050049. The next prime is 500050093. The reversal of 500050081 is 180050005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257313681 + 242736400 = 16041^2 + 15580^2 .

It is a cyclic number.

It is not a de Polignac number, because 500050081 - 2⁵ = 500050049 is a prime.

It is a super-2 number, since 2×500050081² = 500100167016213122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (500050381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250025040 + 250025041.

It is an arithmetic number, because the mean of its divisors is an integer number (250025041).

Almost surely, 2^500050081 is an apocalyptic number.

It is an amenable number.

500050081 is a deficient number, since it is larger than the sum of its proper divisors (1).

500050081 is an equidigital number, since it uses as much as digits as its factorization.

500050081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 500050081 is about 22361.7995921616. The cubic root of 500050081 is about 793.7270246434.

The spelling of 500050081 in words is "five hundred million, fifty thousand, eighty-one".