1166559271 has 2 divisors, whose sum is σ = 1166559272. Its totient is φ = 1166559270.

The previous prime is 1166559259. The next prime is 1166559349. The reversal of 1166559271 is 1729556611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1166559271 - 2⁷ = 1166559143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166559211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583279635 + 583279636.

It is an arithmetic number, because the mean of its divisors is an integer number (583279636).

Almost surely, 2^1166559271 is an apocalyptic number.

1166559271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166559271 is an equidigital number, since it uses as much as digits as its factorization.

1166559271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 43.

The square root of 1166559271 is about 34154.9304054334. The cubic root of 1166559271 is about 1052.6942962539.

The spelling of 1166559271 in words is "one billion, one hundred sixty-six million, five hundred fifty-nine thousand, two hundred seventy-one".