533320021 has 16 divisors (see below), whose sum is σ = 603388800. Its totient is φ = 467691840.

The previous prime is 533320003. The next prime is 533320027. The reversal of 533320021 is 120023335.

It is a cyclic number.

It is not a de Polignac number, because 533320021 - 2¹³ = 533311829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (533320027) 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 in 15 ways as a sum of consecutive naturals, for example, 38566 + ... + 50536.

It is an arithmetic number, because the mean of its divisors is an integer number (37711800).

Almost surely, 2^533320021 is an apocalyptic number.

It is an amenable number.

533320021 is a deficient number, since it is larger than the sum of its proper divisors (70068779).

533320021 is a wasteful number, since it uses less digits than its factorization.

533320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12156.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 533320021 is about 23093.7225453152. The cubic root of 533320021 is about 810.9535186619.

Adding to 533320021 its reverse (120023335), we get a palindrome (653343356).

The spelling of 533320021 in words is "five hundred thirty-three million, three hundred twenty thousand, twenty-one".