497317897 has 4 divisors (see below), whose sum is σ = 514466820. Its totient is φ = 480168976.

The previous prime is 497317889. The next prime is 497317907. The reversal of 497317897 is 798713794.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 798713794 = 2 ⋅399356897.

It can be written as a sum of positive squares in 2 ways, for example, as 388720656 + 108597241 = 19716^2 + 10421^2 .

It is a cyclic number.

It is not a de Polignac number, because 497317897 - 2³ = 497317889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (497314897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8574418 + ... + 8574475.

It is an arithmetic number, because the mean of its divisors is an integer number (128616705).

Almost surely, 2^497317897 is an apocalyptic number.

It is an amenable number.

497317897 is a deficient number, since it is larger than the sum of its proper divisors (17148923).

497317897 is a wasteful number, since it uses less digits than its factorization.

497317897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17148922.

The product of its digits is 2667168, while the sum is 55.

The square root of 497317897 is about 22300.6254845016. The cubic root of 497317897 is about 792.2787897423.

The spelling of 497317897 in words is "four hundred ninety-seven million, three hundred seventeen thousand, eight hundred ninety-seven".