254543 has 4 divisors (see below), whose sum is σ = 267960. Its totient is φ = 241128.

The previous prime is 254537. The next prime is 254557. The reversal of 254543 is 345452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 254543 - 2¹⁴ = 238159 is a prime.

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 (254593) 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, 6680 + ... + 6717.

It is an arithmetic number, because the mean of its divisors is an integer number (66990).

2²⁵⁴⁵⁴³ is an apocalyptic number.

254543 is a deficient number, since it is larger than the sum of its proper divisors (13417).

254543 is a wasteful number, since it uses less digits than its factorization.

254543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13416.

The product of its digits is 2400, while the sum is 23.

The square root of 254543 is about 504.5225465725. The cubic root of 254543 is about 63.3753522331.

Adding to 254543 its reverse (345452), we get a palindrome (599995).

Subtracting 254543 from its reverse (345452), we obtain a palindrome (90909).

It can be divided in two parts, 254 and 543, that added together give a palindrome (797).

The spelling of 254543 in words is "two hundred fifty-four thousand, five hundred forty-three".