255489 has 8 divisors (see below), whose sum is σ = 366912.
Its totient is φ = 157200.
The previous prime is 255487. The next prime is 255499. The reversal of 255489 is 984552.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 255489 - 21 = 255487 is a prime.
It is not an unprimeable number, because it can be changed into a prime (255487) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3237 + ... + 3314.
It is an arithmetic number, because the mean of its divisors is an integer number (45864).
It is a Proth number, since it is equal to 499 ⋅ 29 + 1 and 499 < 29.
2255489 is an apocalyptic number.
It is an amenable number.
255489 is a deficient number, since it is larger than the sum of its proper divisors (111423).
255489 is a wasteful number, since it uses less digits than its factorization.
255489 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6567.
The product of its digits is 14400, while the sum is 33.
The square root of 255489 is about 505.4591971663.
The cubic root of 255489 is about 63.4537659196.
The spelling of 255489 in words is "two hundred fifty-five thousand, four hundred eighty-nine".