533668381 has 2 divisors, whose sum is σ = 533668382. Its totient is φ = 533668380.

The previous prime is 533668363. The next prime is 533668417. The reversal of 533668381 is 183866335.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418857156 + 114811225 = 20466^2 + 10715^2 .

It is a cyclic number.

It is not a de Polignac number, because 533668381 - 2⁵ = 533668349 is a prime.

It is a super-2 number, since 2×533668381² = 569603881758322322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (533668081) 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, 266834190 + 266834191.

It is an arithmetic number, because the mean of its divisors is an integer number (266834191).

Almost surely, 2^533668381 is an apocalyptic number.

It is an amenable number.

533668381 is a deficient number, since it is larger than the sum of its proper divisors (1).

533668381 is an equidigital number, since it uses as much as digits as its factorization.

533668381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 43.

The square root of 533668381 is about 23101.2636234471. The cubic root of 533668381 is about 811.1300494935.

The spelling of 533668381 in words is "five hundred thirty-three million, six hundred sixty-eight thousand, three hundred eighty-one".