505223445697 has 2 divisors, whose sum is σ = 505223445698. Its totient is φ = 505223445696.

The previous prime is 505223445613. The next prime is 505223445739. The reversal of 505223445697 is 796544322505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313371561616 + 191851884081 = 559796^2 + 438009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505223445697 is a prime.

It is not a weakly prime, because it can be changed into another prime (505223449697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252611722848 + 252611722849.

It is an arithmetic number, because the mean of its divisors is an integer number (252611722849).

Almost surely, 2^505223445697 is an apocalyptic number.

It is an amenable number.

505223445697 is a deficient number, since it is larger than the sum of its proper divisors (1).

505223445697 is an equidigital number, since it uses as much as digits as its factorization.

505223445697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072000, while the sum is 52.

The spelling of 505223445697 in words is "five hundred five billion, two hundred twenty-three million, four hundred forty-five thousand, six hundred ninety-seven".