6523197557 has 2 divisors, whose sum is σ = 6523197558. Its totient is φ = 6523197556.

The previous prime is 6523197487. The next prime is 6523197613. The reversal of 6523197557 is 7557913256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5921918116 + 601279441 = 76954^2 + 24521^2 .

It is a cyclic number.

It is not a de Polignac number, because 6523197557 - 2¹⁴ = 6523181173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6523191557) 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, 3261598778 + 3261598779.

It is an arithmetic number, because the mean of its divisors is an integer number (3261598779).

Almost surely, 2^6523197557 is an apocalyptic number.

It is an amenable number.

6523197557 is a deficient number, since it is larger than the sum of its proper divisors (1).

6523197557 is an equidigital number, since it uses as much as digits as its factorization.

6523197557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1984500, while the sum is 50.

The square root of 6523197557 is about 80766.3144943484. The cubic root of 6523197557 is about 1868.4730743262.

The spelling of 6523197557 in words is "six billion, five hundred twenty-three million, one hundred ninety-seven thousand, five hundred fifty-seven".