5197447691 has 2 divisors, whose sum is σ = 5197447692. Its totient is φ = 5197447690.

The previous prime is 5197447687. The next prime is 5197447741. The reversal of 5197447691 is 1967447915.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5197447691 - 2² = 5197447687 is a prime.

It is not a weakly prime, because it can be changed into another prime (5197447601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2598723845 + 2598723846.

It is an arithmetic number, because the mean of its divisors is an integer number (2598723846).

Almost surely, 2^5197447691 is an apocalyptic number.

5197447691 is a deficient number, since it is larger than the sum of its proper divisors (1).

5197447691 is an equidigital number, since it uses as much as digits as its factorization.

5197447691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 53.

The square root of 5197447691 is about 72093.3262583993. The cubic root of 5197447691 is about 1732.1947143114.

The spelling of 5197447691 in words is "five billion, one hundred ninety-seven million, four hundred forty-seven thousand, six hundred ninety-one".