506533 has 2 divisors, whose sum is σ = 506534. Its totient is φ = 506532.

The previous prime is 506531. The next prime is 506537. The reversal of 506533 is 335605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381924 + 124609 = 618^2 + 353^2 .

It is a cyclic number.

It is not a de Polignac number, because 506533 - 2¹ = 506531 is a prime.

Together with 506531, it forms a pair of twin primes.

506533 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253266 + 253267.

It is an arithmetic number, because the mean of its divisors is an integer number (253267).

2⁵⁰⁶⁵³³ is an apocalyptic number.

It is an amenable number.

506533 is a deficient number, since it is larger than the sum of its proper divisors (1).

506533 is an equidigital number, since it uses as much as digits as its factorization.

506533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 506533 is about 711.7113178811. The cubic root of 506533 is about 79.7142409037.

The spelling of 506533 in words is "five hundred six thousand, five hundred thirty-three".