505506143 has 2 divisors, whose sum is σ = 505506144. Its totient is φ = 505506142.

The previous prime is 505506109. The next prime is 505506193. The reversal of 505506143 is 341605505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505506143 - 2²⁰ = 504457567 is a prime.

It is a super-2 number, since 2×505506143² = 511072921221472898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505506193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252753071 + 252753072.

It is an arithmetic number, because the mean of its divisors is an integer number (252753072).

Almost surely, 2^505506143 is an apocalyptic number.

505506143 is a deficient number, since it is larger than the sum of its proper divisors (1).

505506143 is an equidigital number, since it uses as much as digits as its factorization.

505506143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 505506143 is about 22483.4637678450. The cubic root of 505506143 is about 796.6033819546.

The spelling of 505506143 in words is "five hundred five million, five hundred six thousand, one hundred forty-three".