497173021 has 2 divisors, whose sum is σ = 497173022. Its totient is φ = 497173020.

The previous prime is 497172971. The next prime is 497173051. The reversal of 497173021 is 120371794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 380835225 + 116337796 = 19515^2 + 10786^2 .

It is a cyclic number.

It is not a de Polignac number, because 497173021 - 2¹⁵ = 497140253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (497173051) 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, 248586510 + 248586511.

It is an arithmetic number, because the mean of its divisors is an integer number (248586511).

Almost surely, 2^497173021 is an apocalyptic number.

It is an amenable number.

497173021 is a deficient number, since it is larger than the sum of its proper divisors (1).

497173021 is an equidigital number, since it uses as much as digits as its factorization.

497173021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 497173021 is about 22297.3769982032. The cubic root of 497173021 is about 792.2018481252.

The spelling of 497173021 in words is "four hundred ninety-seven million, one hundred seventy-three thousand, twenty-one".