505563213497 has 2 divisors, whose sum is σ = 505563213498. Its totient is φ = 505563213496.

The previous prime is 505563213479. The next prime is 505563213517. The reversal of 505563213497 is 794312365505.

It is a happy number.

Together with previous prime (505563213479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 394841316496 + 110721897001 = 628364^2 + 332749^2 .

It is a cyclic number.

It is not a de Polignac number, because 505563213497 - 2⁶ = 505563213433 is a prime.

It is not a weakly prime, because it can be changed into another prime (505563213437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252781606748 + 252781606749.

It is an arithmetic number, because the mean of its divisors is an integer number (252781606749).

Almost surely, 2^505563213497 is an apocalyptic number.

It is an amenable number.

505563213497 is a deficient number, since it is larger than the sum of its proper divisors (1).

505563213497 is an equidigital number, since it uses as much as digits as its factorization.

505563213497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402000, while the sum is 50.

The spelling of 505563213497 in words is "five hundred five billion, five hundred sixty-three million, two hundred thirteen thousand, four hundred ninety-seven".