5591664523 has 2 divisors, whose sum is σ = 5591664524. Its totient is φ = 5591664522.

The previous prime is 5591664473. The next prime is 5591664563. The reversal of 5591664523 is 3254661955.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5591664523 - 2⁹ = 5591664011 is a prime.

It is not a weakly prime, because it can be changed into another prime (5591664563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2795832261 + 2795832262.

It is an arithmetic number, because the mean of its divisors is an integer number (2795832262).

Almost surely, 2^5591664523 is an apocalyptic number.

5591664523 is a deficient number, since it is larger than the sum of its proper divisors (1).

5591664523 is an equidigital number, since it uses as much as digits as its factorization.

5591664523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972000, while the sum is 46.

The square root of 5591664523 is about 74777.4332469362. The cubic root of 5591664523 is about 1774.9264822291.

The spelling of 5591664523 in words is "five billion, five hundred ninety-one million, six hundred sixty-four thousand, five hundred twenty-three".