6544261 has 2 divisors, whose sum is σ = 6544262. Its totient is φ = 6544260.

The previous prime is 6544243. The next prime is 6544277. The reversal of 6544261 is 1624456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4601025 + 1943236 = 2145^2 + 1394^2 .

It is a cyclic number.

It is not a de Polignac number, because 6544261 - 2¹⁷ = 6413189 is a prime.

It is a super-2 number, since 2×6544261² = 85654704072242, which contains 22 as substring.

6544261 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6544861) 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, 3272130 + 3272131.

It is an arithmetic number, because the mean of its divisors is an integer number (3272131).

Almost surely, 2^6544261 is an apocalyptic number.

It is an amenable number.

6544261 is a deficient number, since it is larger than the sum of its proper divisors (1).

6544261 is an equidigital number, since it uses as much as digits as its factorization.

6544261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 28.

The square root of 6544261 is about 2558.1753262824. The cubic root of 6544261 is about 187.0482017068.

The spelling of 6544261 in words is "six million, five hundred forty-four thousand, two hundred sixty-one".