6533261257 has 2 divisors, whose sum is σ = 6533261258. Its totient is φ = 6533261256.

The previous prime is 6533261249. The next prime is 6533261291. The reversal of 6533261257 is 7521623356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6396160576 + 137100681 = 79976^2 + 11709^2 .

It is a cyclic number.

It is not a de Polignac number, because 6533261257 - 2³ = 6533261249 is a prime.

It is not a weakly prime, because it can be changed into another prime (6533291257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3266630628 + 3266630629.

It is an arithmetic number, because the mean of its divisors is an integer number (3266630629).

Almost surely, 2^6533261257 is an apocalyptic number.

It is an amenable number.

6533261257 is a deficient number, since it is larger than the sum of its proper divisors (1).

6533261257 is an equidigital number, since it uses as much as digits as its factorization.

6533261257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 40.

The square root of 6533261257 is about 80828.5918286345. The cubic root of 6533261257 is about 1869.4334464304.

The spelling of 6533261257 in words is "six billion, five hundred thirty-three million, two hundred sixty-one thousand, two hundred fifty-seven".