506291 has 2 divisors, whose sum is σ = 506292. Its totient is φ = 506290.

The previous prime is 506281. The next prime is 506327. The reversal of 506291 is 192605.

Added to its reverse (192605) it gives a square (698896 = 836²).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 506291 - 2¹⁸ = 244147 is a prime.

It is a super-3 number, since 3×506291³ = 389333591995200513, which contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (506201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253145 + 253146.

It is an arithmetic number, because the mean of its divisors is an integer number (253146).

2⁵⁰⁶²⁹¹ is an apocalyptic number.

506291 is a deficient number, since it is larger than the sum of its proper divisors (1).

506291 is an equidigital number, since it uses as much as digits as its factorization.

506291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 506291 is about 711.5412848177. The cubic root of 506291 is about 79.7015441862.

Adding to 506291 its reverse (192605), we get a palindrome (698896).

It can be divided in two parts, 506 and 291, that added together give a palindrome (797).

The spelling of 506291 in words is "five hundred six thousand, two hundred ninety-one".