255378 has 16 divisors (see below), whose sum is σ = 527616. Its totient is φ = 82320.

The previous prime is 255371. The next prime is 255383. The reversal of 255378 is 873552.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (255371) by changing a digit.

255378 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 7 ways as a sum of consecutive naturals, for example, 501 + ... + 872.

It is an arithmetic number, because the mean of its divisors is an integer number (32976).

2²⁵⁵³⁷⁸ is an apocalyptic number.

255378 is an abundant number, since it is smaller than the sum of its proper divisors (272238).

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

255378 is a wasteful number, since it uses less digits than its factorization.

255378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409.

The product of its digits is 8400, while the sum is 30.

The square root of 255378 is about 505.3493840899. The cubic root of 255378 is about 63.4445751935. Note that the first 3 decimals are identical.

The spelling of 255378 in words is "two hundred fifty-five thousand, three hundred seventy-eight".