245289 has 8 divisors (see below), whose sum is σ = 356832. Its totient is φ = 148640.

The previous prime is 245279. The next prime is 245291. The reversal of 245289 is 982542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245289 - 2⁵ = 245257 is a prime.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (245209) 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 in 7 ways as a sum of consecutive naturals, for example, 3684 + ... + 3749.

It is an arithmetic number, because the mean of its divisors is an integer number (44604).

2²⁴⁵²⁸⁹ is an apocalyptic number.

It is an amenable number.

245289 is a deficient number, since it is larger than the sum of its proper divisors (111543).

245289 is a wasteful number, since it uses less digits than its factorization.

245289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7447.

The product of its digits is 5760, while the sum is 30.

The square root of 245289 is about 495.2665948759. The cubic root of 245289 is about 62.5978414196.

The spelling of 245289 in words is "two hundred forty-five thousand, two hundred eighty-nine".