505458013 has 2 divisors, whose sum is σ = 505458014. Its totient is φ = 505458012.

The previous prime is 505458011. The next prime is 505458061. The reversal of 505458013 is 310854505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 505440324 + 17689 = 22482^2 + 133^2 .

It is a cyclic number.

It is not a de Polignac number, because 505458013 - 2¹ = 505458011 is a prime.

Together with 505458011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505458011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252729006 + 252729007.

It is an arithmetic number, because the mean of its divisors is an integer number (252729007).

Almost surely, 2^505458013 is an apocalyptic number.

It is an amenable number.

505458013 is a deficient number, since it is larger than the sum of its proper divisors (1).

505458013 is an equidigital number, since it uses as much as digits as its factorization.

505458013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 505458013 is about 22482.3934001698. The cubic root of 505458013 is about 796.5780992169.

The spelling of 505458013 in words is "five hundred five million, four hundred fifty-eight thousand, thirteen".