505206497 has 2 divisors, whose sum is σ = 505206498. Its totient is φ = 505206496.

The previous prime is 505206461. The next prime is 505206509. The reversal of 505206497 is 794602505.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 500148496 + 5058001 = 22364^2 + 2249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505206497 is a prime.

It is a super-2 number, since 2×505206497² = 510467209222022018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 505206497.

It is not a weakly prime, because it can be changed into another prime (505206397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252603248 + 252603249.

It is an arithmetic number, because the mean of its divisors is an integer number (252603249).

Almost surely, 2^505206497 is an apocalyptic number.

It is an amenable number.

505206497 is a deficient number, since it is larger than the sum of its proper divisors (1).

505206497 is an equidigital number, since it uses as much as digits as its factorization.

505206497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 505206497 is about 22476.7990826096. The cubic root of 505206497 is about 796.4459514928.

The spelling of 505206497 in words is "five hundred five million, two hundred six thousand, four hundred ninety-seven".