289545 has 16 divisors (see below), whose sum is σ = 470400. Its totient is φ = 152064.

The previous prime is 289543. The next prime is 289559. The reversal of 289545 is 545982.

It is not a de Polignac number, because 289545 - 2¹ = 289543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (289543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1356 + ... + 1554.

It is an arithmetic number, because the mean of its divisors is an integer number (29400).

2²⁸⁹⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

289545 is a deficient number, since it is larger than the sum of its proper divisors (180855).

289545 is a wasteful number, since it uses less digits than its factorization.

289545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304.

The product of its digits is 14400, while the sum is 33.

The square root of 289545 is about 538.0938579839. The cubic root of 289545 is about 66.1564241968.

The spelling of 289545 in words is "two hundred eighty-nine thousand, five hundred forty-five".