5197819521 has 8 divisors (see below), whose sum is σ = 6930761344. Its totient is φ = 3465045360.

The previous prime is 5197819477. The next prime is 5197819559. The reversal of 5197819521 is 1259187915.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5197819521 - 2¹³ = 5197811329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5197819421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87576 + ... + 134406.

It is an arithmetic number, because the mean of its divisors is an integer number (866345168).

Almost surely, 2^5197819521 is an apocalyptic number.

It is an amenable number.

5197819521 is a deficient number, since it is larger than the sum of its proper divisors (1732941823).

5197819521 is a wasteful number, since it uses less digits than its factorization.

5197819521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83831.

The product of its digits is 226800, while the sum is 48.

The square root of 5197819521 is about 72095.9050224075. The cubic root of 5197819521 is about 1732.2360209065.

The spelling of 5197819521 in words is "five billion, one hundred ninety-seven million, eight hundred nineteen thousand, five hundred twenty-one".