497165857 has 2 divisors, whose sum is σ = 497165858. Its totient is φ = 497165856.

The previous prime is 497165803. The next prime is 497165869. The reversal of 497165857 is 758561794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 488586816 + 8579041 = 22104^2 + 2929^2 .

It is a cyclic number.

It is not a de Polignac number, because 497165857 - 2¹⁵ = 497133089 is a prime.

It is a super-3 number, since 3×497165857³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (497165257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248582928 + 248582929.

It is an arithmetic number, because the mean of its divisors is an integer number (248582929).

Almost surely, 2^497165857 is an apocalyptic number.

It is an amenable number.

497165857 is a deficient number, since it is larger than the sum of its proper divisors (1).

497165857 is an equidigital number, since it uses as much as digits as its factorization.

497165857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2116800, while the sum is 52.

The square root of 497165857 is about 22297.2163509260. The cubic root of 497165857 is about 792.1980430372.

The spelling of 497165857 in words is "four hundred ninety-seven million, one hundred sixty-five thousand, eight hundred fifty-seven".