497221019 has 2 divisors, whose sum is σ = 497221020. Its totient is φ = 497221018.

The previous prime is 497221007. The next prime is 497221057. The reversal of 497221019 is 910122794.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497221019 is a prime.

It is a super-2 number, since 2×497221019² = 494457483470796722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 497221019.

It is not a weakly prime, because it can be changed into another prime (497221069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248610509 + 248610510.

It is an arithmetic number, because the mean of its divisors is an integer number (248610510).

Almost surely, 2^497221019 is an apocalyptic number.

497221019 is a deficient number, since it is larger than the sum of its proper divisors (1).

497221019 is an equidigital number, since it uses as much as digits as its factorization.

497221019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 497221019 is about 22298.4532871677. The cubic root of 497221019 is about 792.2273408471.

The spelling of 497221019 in words is "four hundred ninety-seven million, two hundred twenty-one thousand, nineteen".