254561 has 4 divisors (see below), whose sum is σ = 257712. Its totient is φ = 251412.

The previous prime is 254557. The next prime is 254593. The reversal of 254561 is 165452.

254561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 254561 - 2² = 254557 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 5⁷ + 5⁷ + 4⁸ + 6 + 1 .

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

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (254161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1451 + ... + 1616.

It is an arithmetic number, because the mean of its divisors is an integer number (64428).

2²⁵⁴⁵⁶¹ is an apocalyptic number.

It is an amenable number.

254561 is a deficient number, since it is larger than the sum of its proper divisors (3151).

254561 is an equidigital number, since it uses as much as digits as its factorization.

254561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3150.

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

The square root of 254561 is about 504.5403849049. The cubic root of 254561 is about 63.3768460599.

The spelling of 254561 in words is "two hundred fifty-four thousand, five hundred sixty-one".