162289 has 2 divisors, whose sum is σ = 162290. Its totient is φ = 162288.

The previous prime is 162287. The next prime is 162293. The reversal of 162289 is 982261.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119025 + 43264 = 345^2 + 208^2 .

It is a cyclic number.

It is not a de Polignac number, because 162289 - 2¹ = 162287 is a prime.

Together with 162287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (162287) 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, 81144 + 81145.

It is an arithmetic number, because the mean of its divisors is an integer number (81145).

2¹⁶²²⁸⁹ is an apocalyptic number.

It is an amenable number.

162289 is a deficient number, since it is larger than the sum of its proper divisors (1).

162289 is an equidigital number, since it uses as much as digits as its factorization.

162289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 28.

The square root of 162289 is about 402.8510891136. The cubic root of 162289 is about 54.5460150616.

Subtracting from 162289 its sum of digits (28), we obtain a palindrome (162261).

It can be divided in two parts, 1622 and 89, that added together give a triangular number (1711 = T₅₈).

The spelling of 162289 in words is "one hundred sixty-two thousand, two hundred eighty-nine".