6517481 has 2 divisors, whose sum is σ = 6517482. Its totient is φ = 6517480.

The previous prime is 6517447. The next prime is 6517499. The reversal of 6517481 is 1847156.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5736025 + 781456 = 2395^2 + 884^2 .

It is a cyclic number.

It is not a de Polignac number, because 6517481 - 2²² = 2323177 is a prime.

It is a super-2 number, since 2×6517481² = 84955117170722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6517411) 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, 3258740 + 3258741.

It is an arithmetic number, because the mean of its divisors is an integer number (3258741).

Almost surely, 2^6517481 is an apocalyptic number.

It is an amenable number.

6517481 is a deficient number, since it is larger than the sum of its proper divisors (1).

6517481 is an equidigital number, since it uses as much as digits as its factorization.

6517481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 32.

The square root of 6517481 is about 2552.9357610406. The cubic root of 6517481 is about 186.7927107189.

The spelling of 6517481 in words is "six million, five hundred seventeen thousand, four hundred eighty-one".