533509 has 2 divisors, whose sum is σ = 533510. Its totient is φ = 533508.

The previous prime is 533459. The next prime is 533543. The reversal of 533509 is 905335.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 390625 + 142884 = 625^2 + 378^2 .

It is a cyclic number.

It is not a de Polignac number, because 533509 - 2¹⁵ = 500741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (533549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266754 + 266755.

It is an arithmetic number, because the mean of its divisors is an integer number (266755).

2⁵³³⁵⁰⁹ is an apocalyptic number.

It is an amenable number.

533509 is a deficient number, since it is larger than the sum of its proper divisors (1).

533509 is an equidigital number, since it uses as much as digits as its factorization.

533509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2025, while the sum is 25.

The square root of 533509 is about 730.4170041832. The cubic root of 533509 is about 81.1049292982.

The spelling of 533509 in words is "five hundred thirty-three thousand, five hundred nine".