254643 has 8 divisors (see below), whose sum is σ = 359568. Its totient is φ = 159744.

The previous prime is 254627. The next prime is 254647. The reversal of 254643 is 346452.

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

It is not a de Polignac number, because 254643 - 2⁴ = 254627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (254647) 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 7 ways as a sum of consecutive naturals, for example, 2446 + ... + 2547.

It is an arithmetic number, because the mean of its divisors is an integer number (44946).

2²⁵⁴⁶⁴³ is an apocalyptic number.

254643 is a deficient number, since it is larger than the sum of its proper divisors (104925).

254643 is a wasteful number, since it uses less digits than its factorization.

254643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5013.

The product of its digits is 2880, while the sum is 24.

The square root of 254643 is about 504.6216404396. The cubic root of 254643 is about 63.3836503798.

Subtracting 254643 from its reverse (346452), we obtain a square (91809 = 303²).

It can be divided in two parts, 2 and 54643, that added together give a palindrome (54645).

The spelling of 254643 in words is "two hundred fifty-four thousand, six hundred forty-three".