497821003 has 2 divisors, whose sum is σ = 497821004. Its totient is φ = 497821002.

The previous prime is 497820991. The next prime is 497821007. The reversal of 497821003 is 300128794.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497821003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 497821003.

It is not a weakly prime, because it can be changed into another prime (497821007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248910501 + 248910502.

It is an arithmetic number, because the mean of its divisors is an integer number (248910502).

Almost surely, 2^497821003 is an apocalyptic number.

497821003 is a deficient number, since it is larger than the sum of its proper divisors (1).

497821003 is an equidigital number, since it uses as much as digits as its factorization.

497821003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 497821003 is about 22311.9027202971. The cubic root of 497821003 is about 792.5458663128.

Adding to 497821003 its reverse (300128794), we get a palindrome (797949797).

The spelling of 497821003 in words is "four hundred ninety-seven million, eight hundred twenty-one thousand, three".