255474 has 40 divisors (see below), whose sum is σ = 609840. Its totient is φ = 79704.

The previous prime is 255473. The next prime is 255487. The reversal of 255474 is 474552.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (255473) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3037 + ... + 3119.

It is an arithmetic number, because the mean of its divisors is an integer number (15246).

2²⁵⁵⁴⁷⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304920).

255474 is an abundant number, since it is smaller than the sum of its proper divisors (354366).

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

255474 is a wasteful number, since it uses less digits than its factorization.

255474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 107 counting only the distinct ones).

The product of its digits is 5600, while the sum is 27.

The square root of 255474 is about 505.4443589556. Note that the first 3 decimals coincide. The cubic root of 255474 is about 63.4525240852.

It can be divided in two parts, 2554 and 74, that added together give a triangular number (2628 = T₇₂).

The spelling of 255474 in words is "two hundred fifty-five thousand, four hundred seventy-four".