533066981 has 2 divisors, whose sum is σ = 533066982. Its totient is φ = 533066980.

The previous prime is 533066971. The next prime is 533066999. The reversal of 533066981 is 189660335.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 296184100 + 236882881 = 17210^2 + 15391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-533066981 is a prime.

It is a super-2 number, since 2×533066981² = 568320812464908722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (533066971) 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, 266533490 + 266533491.

It is an arithmetic number, because the mean of its divisors is an integer number (266533491).

Almost surely, 2^533066981 is an apocalyptic number.

It is an amenable number.

533066981 is a deficient number, since it is larger than the sum of its proper divisors (1).

533066981 is an equidigital number, since it uses as much as digits as its factorization.

533066981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 533066981 is about 23088.2433502421. The cubic root of 533066981 is about 810.8252428722.

The spelling of 533066981 in words is "five hundred thirty-three million, sixty-six thousand, nine hundred eighty-one".