505005143 has 2 divisors, whose sum is σ = 505005144. Its totient is φ = 505005142.

The previous prime is 505005121. The next prime is 505005173. The reversal of 505005143 is 341500505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505005143 - 2²⁶ = 437896279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505005173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252502571 + 252502572.

It is an arithmetic number, because the mean of its divisors is an integer number (252502572).

Almost surely, 2^505005143 is an apocalyptic number.

505005143 is a deficient number, since it is larger than the sum of its proper divisors (1).

505005143 is an equidigital number, since it uses as much as digits as its factorization.

505005143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 505005143 is about 22472.3194842010. The cubic root of 505005143 is about 796.3401275119.

Adding to 505005143 its reverse (341500505), we get a palindrome (846505648).

The spelling of 505005143 in words is "five hundred five million, five thousand, one hundred forty-three".