6561293 has 2 divisors, whose sum is σ = 6561294. Its totient is φ = 6561292.

The previous prime is 6561287. The next prime is 6561307. The reversal of 6561293 is 3921656.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6061444 + 499849 = 2462^2 + 707^2 .

It is a cyclic number.

It is not a de Polignac number, because 6561293 - 2⁴ = 6561277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6561223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280646 + 3280647.

It is an arithmetic number, because the mean of its divisors is an integer number (3280647).

Almost surely, 2^6561293 is an apocalyptic number.

It is an amenable number.

6561293 is a deficient number, since it is larger than the sum of its proper divisors (1).

6561293 is an equidigital number, since it uses as much as digits as its factorization.

6561293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 32.

The square root of 6561293 is about 2561.5020983790. The cubic root of 6561293 is about 187.2103307939.

The spelling of 6561293 in words is "six million, five hundred sixty-one thousand, two hundred ninety-three".