505738771 has 2 divisors, whose sum is σ = 505738772. Its totient is φ = 505738770.

The previous prime is 505738759. The next prime is 505738787. The reversal of 505738771 is 177837505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505738771 - 2⁷ = 505738643 is a prime.

It is not a weakly prime, because it can be changed into another prime (505732771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252869385 + 252869386.

It is an arithmetic number, because the mean of its divisors is an integer number (252869386).

Almost surely, 2^505738771 is an apocalyptic number.

505738771 is a deficient number, since it is larger than the sum of its proper divisors (1).

505738771 is an equidigital number, since it uses as much as digits as its factorization.

505738771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 205800, while the sum is 43.

The square root of 505738771 is about 22488.6364860122. The cubic root of 505738771 is about 796.7255590605.

The spelling of 505738771 in words is "five hundred five million, seven hundred thirty-eight thousand, seven hundred seventy-one".