500527981 has 2 divisors, whose sum is σ = 500527982. Its totient is φ = 500527980.

The previous prime is 500527961. The next prime is 500528011. The reversal of 500527981 is 189725005.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 490223881 + 10304100 = 22141^2 + 3210^2 .

It is a cyclic number.

It is not a de Polignac number, because 500527981 - 2¹¹ = 500525933 is a prime.

It is a super-2 number, since 2×500527981² = 501056519527872722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 500527981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500527921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250263990 + 250263991.

It is an arithmetic number, because the mean of its divisors is an integer number (250263991).

Almost surely, 2^500527981 is an apocalyptic number.

It is an amenable number.

500527981 is a deficient number, since it is larger than the sum of its proper divisors (1).

500527981 is an equidigital number, since it uses as much as digits as its factorization.

500527981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 500527981 is about 22372.4826740351. The cubic root of 500527981 is about 793.9798002378.

The spelling of 500527981 in words is "five hundred million, five hundred twenty-seven thousand, nine hundred eighty-one".