255486 has 48 divisors (see below), whose sum is σ = 656640. Its totient is φ = 65520.

The previous prime is 255473. The next prime is 255487. The reversal of 255486 is 684552.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 255486.

It is not an unprimeable number, because it can be changed into a prime (255487) by changing a digit.

255486 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3195 + ... + 3273.

It is an arithmetic number, because the mean of its divisors is an integer number (13680).

2²⁵⁵⁴⁸⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328320).

255486 is an abundant number, since it is smaller than the sum of its proper divisors (401154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255486 is a wasteful number, since it uses less digits than its factorization.

255486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 102 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 255486 is about 505.4562295590. The cubic root of 255486 is about 63.4535175566.

It can be divided in two parts, 255 and 486, that added together give a triangular number (741 = T₃₈).

The spelling of 255486 in words is "two hundred fifty-five thousand, four hundred eighty-six".