497664281 has 2 divisors, whose sum is σ = 497664282. Its totient is φ = 497664280.

The previous prime is 497664263. The next prime is 497664289. The reversal of 497664281 is 182466794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370177600 + 127486681 = 19240^2 + 11291^2 .

It is a cyclic number.

It is not a de Polignac number, because 497664281 - 2⁶ = 497664217 is a prime.

It is a super-2 number, since 2×497664281² = 495339473166493922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (497664289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248832140 + 248832141.

It is an arithmetic number, because the mean of its divisors is an integer number (248832141).

Almost surely, 2^497664281 is an apocalyptic number.

It is an amenable number.

497664281 is a deficient number, since it is larger than the sum of its proper divisors (1).

497664281 is an equidigital number, since it uses as much as digits as its factorization.

497664281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 47.

The square root of 497664281 is about 22308.3903722344. The cubic root of 497664281 is about 792.4626888862.

The spelling of 497664281 in words is "four hundred ninety-seven million, six hundred sixty-four thousand, two hundred eighty-one".