505140463 has 2 divisors, whose sum is σ = 505140464. Its totient is φ = 505140462.

The previous prime is 505140347. The next prime is 505140469. The reversal of 505140463 is 364041505.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505140463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505140469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252570231 + 252570232.

It is an arithmetic number, because the mean of its divisors is an integer number (252570232).

Almost surely, 2^505140463 is an apocalyptic number.

505140463 is a deficient number, since it is larger than the sum of its proper divisors (1).

505140463 is an equidigital number, since it uses as much as digits as its factorization.

505140463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 505140463 is about 22475.3300976871. The cubic root of 505140463 is about 796.4112496406.

Adding to 505140463 its reverse (364041505), we get a palindrome (869181968).

The spelling of 505140463 in words is "five hundred five million, one hundred forty thousand, four hundred sixty-three".