1171213559 has 2 divisors, whose sum is σ = 1171213560. Its totient is φ = 1171213558.

The previous prime is 1171213553. The next prime is 1171213579. The reversal of 1171213559 is 9553121711.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1171213559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1171213553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585606779 + 585606780.

It is an arithmetic number, because the mean of its divisors is an integer number (585606780).

Almost surely, 2^1171213559 is an apocalyptic number.

1171213559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171213559 is an equidigital number, since it uses as much as digits as its factorization.

1171213559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9450, while the sum is 35.

The square root of 1171213559 is about 34222.9975162901. The cubic root of 1171213559 is about 1054.0924366263.

The spelling of 1171213559 in words is "one billion, one hundred seventy-one million, two hundred thirteen thousand, five hundred fifty-nine".