505434263 has 2 divisors, whose sum is σ = 505434264. Its totient is φ = 505434262.

The previous prime is 505434247. The next prime is 505434277. The reversal of 505434263 is 362434505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505434263 - 2⁴ = 505434247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505434563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252717131 + 252717132.

It is an arithmetic number, because the mean of its divisors is an integer number (252717132).

Almost surely, 2^505434263 is an apocalyptic number.

505434263 is a deficient number, since it is larger than the sum of its proper divisors (1).

505434263 is an equidigital number, since it uses as much as digits as its factorization.

505434263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 505434263 is about 22481.8652028696. The cubic root of 505434263 is about 796.5656227265.

Adding to 505434263 its reverse (362434505), we get a palindrome (867868768).

The spelling of 505434263 in words is "five hundred five million, four hundred thirty-four thousand, two hundred sixty-three".