6516241 has 2 divisors, whose sum is σ = 6516242. Its totient is φ = 6516240.

The previous prime is 6516239. The next prime is 6516269. The reversal of 6516241 is 1426156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6230016 + 286225 = 2496^2 + 535^2 .

It is a cyclic number.

It is not a de Polignac number, because 6516241 - 2¹ = 6516239 is a prime.

It is a super-2 number, since 2×6516241² = 84922793540162, which contains 22 as substring.

Together with 6516239, it forms a pair of twin primes.

6516241 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6516281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3258120 + 3258121.

It is an arithmetic number, because the mean of its divisors is an integer number (3258121).

Almost surely, 2^6516241 is an apocalyptic number.

It is an amenable number.

6516241 is a deficient number, since it is larger than the sum of its proper divisors (1).

6516241 is an equidigital number, since it uses as much as digits as its factorization.

6516241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 6516241 is about 2552.6928918301. The cubic root of 6516241 is about 186.7808637260.

The spelling of 6516241 in words is "six million, five hundred sixteen thousand, two hundred forty-one".