229591 has 2 divisors, whose sum is σ = 229592. Its totient is φ = 229590.

The previous prime is 229589. The next prime is 229601. The reversal of 229591 is 195922.

229591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 229591 - 2¹ = 229589 is a prime.

Together with 229589, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114795 + 114796.

It is an arithmetic number, because the mean of its divisors is an integer number (114796).

2²²⁹⁵⁹¹ is an apocalyptic number.

229591 is a deficient number, since it is larger than the sum of its proper divisors (1).

229591 is an equidigital number, since it uses as much as digits as its factorization.

229591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 28.

The square root of 229591 is about 479.1565506179. The cubic root of 229591 is about 61.2329176297.

It can be divided in two parts, 229 and 591, that added together give a triangular number (820 = T₄₀).

The spelling of 229591 in words is "two hundred twenty-nine thousand, five hundred ninety-one".