505516867 has 2 divisors, whose sum is σ = 505516868. Its totient is φ = 505516866.

The previous prime is 505516861. The next prime is 505516871. The reversal of 505516867 is 768615505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505516867 - 2²⁷ = 371299139 is a prime.

It is not a weakly prime, because it can be changed into another prime (505516861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252758433 + 252758434.

It is an arithmetic number, because the mean of its divisors is an integer number (252758434).

Almost surely, 2^505516867 is an apocalyptic number.

505516867 is a deficient number, since it is larger than the sum of its proper divisors (1).

505516867 is an equidigital number, since it uses as much as digits as its factorization.

505516867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 505516867 is about 22483.7022529654. The cubic root of 505516867 is about 796.6090150641.

The spelling of 505516867 in words is "five hundred five million, five hundred sixteen thousand, eight hundred sixty-seven".