5197659521 has 2 divisors, whose sum is σ = 5197659522. Its totient is φ = 5197659520.

The previous prime is 5197659517. The next prime is 5197659539. The reversal of 5197659521 is 1259567915.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4669808896 + 527850625 = 68336^2 + 22975^2 .

It is a cyclic number.

It is not a de Polignac number, because 5197659521 - 2² = 5197659517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5197659521.

It is not a weakly prime, because it can be changed into another prime (5197659581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2598829760 + 2598829761.

It is an arithmetic number, because the mean of its divisors is an integer number (2598829761).

Almost surely, 2^5197659521 is an apocalyptic number.

It is an amenable number.

5197659521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5197659521 is an equidigital number, since it uses as much as digits as its factorization.

5197659521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 850500, while the sum is 50.

The square root of 5197659521 is about 72094.7953808040. The cubic root of 5197659521 is about 1732.2182467478.

The spelling of 5197659521 in words is "five billion, one hundred ninety-seven million, six hundred fifty-nine thousand, five hundred twenty-one".