500204981 has 2 divisors, whose sum is σ = 500204982. Its totient is φ = 500204980.

The previous prime is 500204951. The next prime is 500204993. The reversal of 500204981 is 189402005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 340587025 + 159617956 = 18455^2 + 12634^2 .

It is a cyclic number.

It is not a de Polignac number, because 500204981 - 2⁶ = 500204917 is a prime.

It is a super-2 number, since 2×500204981² = 500410046034420722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500204951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250102490 + 250102491.

It is an arithmetic number, because the mean of its divisors is an integer number (250102491).

Almost surely, 2^500204981 is an apocalyptic number.

It is an amenable number.

500204981 is a deficient number, since it is larger than the sum of its proper divisors (1).

500204981 is an equidigital number, since it uses as much as digits as its factorization.

500204981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 500204981 is about 22365.2628198284. The cubic root of 500204981 is about 793.8089735173.

Adding to 500204981 its reverse (189402005), we get a palindrome (689606986).

The spelling of 500204981 in words is "five hundred million, two hundred four thousand, nine hundred eighty-one".