254581 has 4 divisors (see below), whose sum is σ = 268000. Its totient is φ = 241164.

The previous prime is 254557. The next prime is 254593. The reversal of 254581 is 185452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 254581 - 2¹¹ = 252533 is a prime.

It is a super-2 number, since 2×254581² = 129622971122, which contains 22 as substring.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6681 + ... + 6718.

It is an arithmetic number, because the mean of its divisors is an integer number (67000).

2²⁵⁴⁵⁸¹ is an apocalyptic number.

It is an amenable number.

254581 is a deficient number, since it is larger than the sum of its proper divisors (13419).

254581 is a wasteful number, since it uses less digits than its factorization.

254581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13418.

The product of its digits is 1600, while the sum is 25.

The square root of 254581 is about 504.5602045346. The cubic root of 254581 is about 63.3785057848.

The spelling of 254581 in words is "two hundred fifty-four thousand, five hundred eighty-one".