255461 has 8 divisors (see below), whose sum is σ = 276480. Its totient is φ = 235312.

The previous prime is 255457. The next prime is 255467. The reversal of 255461 is 164552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255461 - 2² = 255457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

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 255461.

It is not an unprimeable number, because it can be changed into a prime (255467) 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, 476 + ... + 858.

It is an arithmetic number, because the mean of its divisors is an integer number (34560).

2²⁵⁵⁴⁶¹ is an apocalyptic number.

It is an amenable number.

255461 is a deficient number, since it is larger than the sum of its proper divisors (21019).

255461 is a wasteful number, since it uses less digits than its factorization.

255461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435.

The product of its digits is 1200, while the sum is 23.

The square root of 255461 is about 505.4314988206. The cubic root of 255461 is about 63.4514477893.

Subtracting from 255461 its reverse (164552), we obtain a palindrome (90909).

The spelling of 255461 in words is "two hundred fifty-five thousand, four hundred sixty-one".