505522513 has 2 divisors, whose sum is σ = 505522514. Its totient is φ = 505522512.

The previous prime is 505522499. The next prime is 505522529. The reversal of 505522513 is 315225505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 300259584 + 205262929 = 17328^2 + 14327^2 .

It is a cyclic number.

It is not a de Polignac number, because 505522513 - 2⁹ = 505522001 is a prime.

It is a super-2 number, since 2×505522513² = 511106022299670338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (505522583) 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, 252761256 + 252761257.

It is an arithmetic number, because the mean of its divisors is an integer number (252761257).

Almost surely, 2^505522513 is an apocalyptic number.

It is an amenable number.

505522513 is a deficient number, since it is larger than the sum of its proper divisors (1).

505522513 is an equidigital number, since it uses as much as digits as its factorization.

505522513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 505522513 is about 22483.8278102284. The cubic root of 505522513 is about 796.6119807665.

The spelling of 505522513 in words is "five hundred five million, five hundred twenty-two thousand, five hundred thirteen".