591089 has 2 divisors, whose sum is σ = 591090. Its totient is φ = 591088.

The previous prime is 591079. The next prime is 591091. The reversal of 591089 is 980195.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 478864 + 112225 = 692^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 591089 - 2⁸ = 590833 is a prime.

Together with 591091, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 591089.

It is not a weakly prime, because it can be changed into another prime (591079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 295544 + 295545.

It is an arithmetic number, because the mean of its divisors is an integer number (295545).

2⁵⁹¹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

591089 is a deficient number, since it is larger than the sum of its proper divisors (1).

591089 is an equidigital number, since it uses as much as digits as its factorization.

591089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 591089 is about 768.8231266033. The cubic root of 591089 is about 83.9236361926.

The spelling of 591089 in words is "five hundred ninety-one thousand, eighty-nine".