497225857 has 2 divisors, whose sum is σ = 497225858. Its totient is φ = 497225856.

The previous prime is 497225837. The next prime is 497225873. The reversal of 497225857 is 758522794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 473323536 + 23902321 = 21756^2 + 4889^2 .

It is a cyclic number.

It is not a de Polignac number, because 497225857 - 2¹¹ = 497223809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 497225857.

It is not a weakly prime, because it can be changed into another prime (497225837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248612928 + 248612929.

It is an arithmetic number, because the mean of its divisors is an integer number (248612929).

Almost surely, 2^497225857 is an apocalyptic number.

It is an amenable number.

497225857 is a deficient number, since it is larger than the sum of its proper divisors (1).

497225857 is an equidigital number, since it uses as much as digits as its factorization.

497225857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1411200, while the sum is 49.

The square root of 497225857 is about 22298.5617697644. The cubic root of 497225857 is about 792.2299103171.

The spelling of 497225857 in words is "four hundred ninety-seven million, two hundred twenty-five thousand, eight hundred fifty-seven".