245889 has 16 divisors (see below), whose sum is σ = 416640. Its totient is φ = 140400.

The previous prime is 245881. The next prime is 245897. The reversal of 245889 is 988542.

It is an interprime number because it is at equal distance from previous prime (245881) and next prime (245897).

It is not a de Polignac number, because 245889 - 2³ = 245881 is a prime.

It is a super-2 number, since 2×245889² = 120922800642, which contains 22 as substring.

245889 is a lucky number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (245881) 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, 462 + ... + 839.

It is an arithmetic number, because the mean of its divisors is an integer number (26040).

2²⁴⁵⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

245889 is a deficient number, since it is larger than the sum of its proper divisors (170751).

245889 is a wasteful number, since it uses less digits than its factorization.

245889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317 (or 1311 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 245889 is about 495.8719592798. The cubic root of 245889 is about 62.6488399321.

The spelling of 245889 in words is "two hundred forty-five thousand, eight hundred eighty-nine".