505224871 has 2 divisors, whose sum is σ = 505224872. Its totient is φ = 505224870.

The previous prime is 505224859. The next prime is 505224911. The reversal of 505224871 is 178422505.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505224871 - 2⁷ = 505224743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505224571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252612435 + 252612436.

It is an arithmetic number, because the mean of its divisors is an integer number (252612436).

Almost surely, 2^505224871 is an apocalyptic number.

505224871 is a deficient number, since it is larger than the sum of its proper divisors (1).

505224871 is an equidigital number, since it uses as much as digits as its factorization.

505224871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 505224871 is about 22477.2078114698. The cubic root of 505224871 is about 796.4556067662.

The spelling of 505224871 in words is "five hundred five million, two hundred twenty-four thousand, eight hundred seventy-one".