497949481 has 2 divisors, whose sum is σ = 497949482. Its totient is φ = 497949480.

The previous prime is 497949479. The next prime is 497949547. The reversal of 497949481 is 184949794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299843856 + 198105625 = 17316^2 + 14075^2 .

It is a cyclic number.

It is not a de Polignac number, because 497949481 - 2¹ = 497949479 is a prime.

It is a super-2 number, since 2×497949481² = 495907371256338722, which contains 22 as substring.

Together with 497949479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (497949421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248974740 + 248974741.

It is an arithmetic number, because the mean of its divisors is an integer number (248974741).

Almost surely, 2^497949481 is an apocalyptic number.

It is an amenable number.

497949481 is a deficient number, since it is larger than the sum of its proper divisors (1).

497949481 is an equidigital number, since it uses as much as digits as its factorization.

497949481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 55.

The square root of 497949481 is about 22314.7816704533. The cubic root of 497949481 is about 792.6140407161.

The spelling of 497949481 in words is "four hundred ninety-seven million, nine hundred forty-nine thousand, four hundred eighty-one".