497343521 has 2 divisors, whose sum is σ = 497343522. Its totient is φ = 497343520.

The previous prime is 497343443. The next prime is 497343527. The reversal of 497343521 is 125343794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 359633296 + 137710225 = 18964^2 + 11735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497343521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (497343527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248671760 + 248671761.

It is an arithmetic number, because the mean of its divisors is an integer number (248671761).

Almost surely, 2^497343521 is an apocalyptic number.

It is an amenable number.

497343521 is a deficient number, since it is larger than the sum of its proper divisors (1).

497343521 is an equidigital number, since it uses as much as digits as its factorization.

497343521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 38.

The square root of 497343521 is about 22301.1999901351. The cubic root of 497343521 is about 792.2923967351.

The spelling of 497343521 in words is "four hundred ninety-seven million, three hundred forty-three thousand, five hundred twenty-one".