505966943 has 2 divisors, whose sum is σ = 505966944. Its totient is φ = 505966942.

The previous prime is 505966919. The next prime is 505966957. The reversal of 505966943 is 349669505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505966943 - 2⁸ = 505966687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505966913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252983471 + 252983472.

It is an arithmetic number, because the mean of its divisors is an integer number (252983472).

Almost surely, 2^505966943 is an apocalyptic number.

505966943 is a deficient number, since it is larger than the sum of its proper divisors (1).

505966943 is an equidigital number, since it uses as much as digits as its factorization.

505966943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 874800, while the sum is 47.

The square root of 505966943 is about 22493.7089649528. The cubic root of 505966943 is about 796.8453594675.

The spelling of 505966943 in words is "five hundred five million, nine hundred sixty-six thousand, nine hundred forty-three".