2991575617 has 2 divisors, whose sum is σ = 2991575618. Its totient is φ = 2991575616.

The previous prime is 2991575563. The next prime is 2991575651. The reversal of 2991575617 is 7165751992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2872852801 + 118722816 = 53599^2 + 10896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2991575617 is a prime.

It is not a weakly prime, because it can be changed into another prime (2991575677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1495787808 + 1495787809.

It is an arithmetic number, because the mean of its divisors is an integer number (1495787809).

Almost surely, 2^2991575617 is an apocalyptic number.

It is an amenable number.

2991575617 is a deficient number, since it is larger than the sum of its proper divisors (1).

2991575617 is an equidigital number, since it uses as much as digits as its factorization.

2991575617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1190700, while the sum is 52.

The square root of 2991575617 is about 54695.2979423277. The cubic root of 2991575617 is about 1440.8982976948.

The spelling of 2991575617 in words is "two billion, nine hundred ninety-one million, five hundred seventy-five thousand, six hundred seventeen".