2991559 has 2 divisors, whose sum is σ = 2991560. Its totient is φ = 2991558.

The previous prime is 2991551. The next prime is 2991589. The reversal of 2991559 is 9551992.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2991559 - 2³ = 2991551 is a prime.

2991559 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2991551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1495779 + 1495780.

It is an arithmetic number, because the mean of its divisors is an integer number (1495780).

2^2991559 is an apocalyptic number.

2991559 is a deficient number, since it is larger than the sum of its proper divisors (1).

2991559 is an equidigital number, since it uses as much as digits as its factorization.

2991559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36450, while the sum is 40.

The square root of 2991559 is about 1729.6123843220. The cubic root of 2991559 is about 144.0895629820.

The spelling of 2991559 in words is "two million, nine hundred ninety-one thousand, five hundred fifty-nine".