505280297 has 2 divisors, whose sum is σ = 505280298. Its totient is φ = 505280296.

The previous prime is 505280227. The next prime is 505280309. The reversal of 505280297 is 792082505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 458645056 + 46635241 = 21416^2 + 6829^2 .

It is a cyclic number.

It is not a de Polignac number, because 505280297 - 2¹⁰ = 505279273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505280297.

It is not a weakly prime, because it can be changed into another prime (505280207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252640148 + 252640149.

It is an arithmetic number, because the mean of its divisors is an integer number (252640149).

Almost surely, 2^505280297 is an apocalyptic number.

It is an amenable number.

505280297 is a deficient number, since it is larger than the sum of its proper divisors (1).

505280297 is an equidigital number, since it uses as much as digits as its factorization.

505280297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 505280297 is about 22478.4407154945. The cubic root of 505280297 is about 796.4847309158.

The spelling of 505280297 in words is "five hundred five million, two hundred eighty thousand, two hundred ninety-seven".