289573 has 2 divisors, whose sum is σ = 289574. Its totient is φ = 289572.

The previous prime is 289559. The next prime is 289577. The reversal of 289573 is 375982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146689 + 142884 = 383^2 + 378^2 .

It is a cyclic number.

It is not a de Polignac number, because 289573 - 2¹³ = 281381 is a prime.

289573 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144786 + 144787.

It is an arithmetic number, because the mean of its divisors is an integer number (144787).

2²⁸⁹⁵⁷³ is an apocalyptic number.

It is an amenable number.

289573 is a deficient number, since it is larger than the sum of its proper divisors (1).

289573 is an equidigital number, since it uses as much as digits as its factorization.

289573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 289573 is about 538.1198751208. The cubic root of 289573 is about 66.1585566462.

The spelling of 289573 in words is "two hundred eighty-nine thousand, five hundred seventy-three".