291559 has 2 divisors, whose sum is σ = 291560. Its totient is φ = 291558.

The previous prime is 291547. The next prime is 291563. The reversal of 291559 is 955192.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 291559 - 2¹¹ = 289511 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 291559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (291509) 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, 145779 + 145780.

It is an arithmetic number, because the mean of its divisors is an integer number (145780).

2²⁹¹⁵⁵⁹ is an apocalyptic number.

291559 is a deficient number, since it is larger than the sum of its proper divisors (1).

291559 is an equidigital number, since it uses as much as digits as its factorization.

291559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4050, while the sum is 31.

The square root of 291559 is about 539.9620357025. The cubic root of 291559 is about 66.3094589020.

The spelling of 291559 in words is "two hundred ninety-one thousand, five hundred fifty-nine".