6512281 has 2 divisors, whose sum is σ = 6512282. Its totient is φ = 6512280.

The previous prime is 6512279. The next prime is 6512291. The reversal of 6512281 is 1822156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3936256 + 2576025 = 1984^2 + 1605^2 .

It is a cyclic number.

It is not a de Polignac number, because 6512281 - 2¹ = 6512279 is a prime.

It is a super-2 number, since 2×6512281² = 84819607645922, which contains 22 as substring.

Together with 6512279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6512251) 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, 3256140 + 3256141.

It is an arithmetic number, because the mean of its divisors is an integer number (3256141).

Almost surely, 2^6512281 is an apocalyptic number.

It is an amenable number.

6512281 is a deficient number, since it is larger than the sum of its proper divisors (1).

6512281 is an equidigital number, since it uses as much as digits as its factorization.

6512281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 25.

The square root of 6512281 is about 2551.9171224787. The cubic root of 6512281 is about 186.7430197143.

The spelling of 6512281 in words is "six million, five hundred twelve thousand, two hundred eighty-one".