497221931 has 2 divisors, whose sum is σ = 497221932. Its totient is φ = 497221930.

The previous prime is 497221867. The next prime is 497221939. The reversal of 497221931 is 139122794.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 497221931 - 2⁶ = 497221867 is a prime.

It is a super-2 number, since 2×497221931² = 494459297334737522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (497221939) 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 as a sum of consecutive naturals, namely, 248610965 + 248610966.

It is an arithmetic number, because the mean of its divisors is an integer number (248610966).

Almost surely, 2^497221931 is an apocalyptic number.

497221931 is a deficient number, since it is larger than the sum of its proper divisors (1).

497221931 is an equidigital number, since it uses as much as digits as its factorization.

497221931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 497221931 is about 22298.4737370072. The cubic root of 497221931 is about 792.2278252131.

The spelling of 497221931 in words is "four hundred ninety-seven million, two hundred twenty-one thousand, nine hundred thirty-one".