6521041 has 2 divisors, whose sum is σ = 6521042. Its totient is φ = 6521040.

The previous prime is 6521023. The next prime is 6521057. The reversal of 6521041 is 1401256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6275025 + 246016 = 2505^2 + 496^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6521041 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6521071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3260520 + 3260521.

It is an arithmetic number, because the mean of its divisors is an integer number (3260521).

Almost surely, 2^6521041 is an apocalyptic number.

It is an amenable number.

6521041 is a deficient number, since it is larger than the sum of its proper divisors (1).

6521041 is an equidigital number, since it uses as much as digits as its factorization.

6521041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 6521041 is about 2553.6329023570. The cubic root of 6521041 is about 186.8267147055.

Adding to 6521041 its reverse (1401256), we get a palindrome (7922297).

The spelling of 6521041 in words is "six million, five hundred twenty-one thousand, forty-one".