254861 has 4 divisors (see below), whose sum is σ = 260832. Its totient is φ = 248892.

The previous prime is 254857. The next prime is 254869. The reversal of 254861 is 168452.

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 254861 - 2² = 254857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 254861.

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 254861.

It is not an unprimeable number, because it can be changed into a prime (254869) 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, 2921 + ... + 3006.

It is an arithmetic number, because the mean of its divisors is an integer number (65208).

2²⁵⁴⁸⁶¹ is an apocalyptic number.

It is an amenable number.

254861 is a deficient number, since it is larger than the sum of its proper divisors (5971).

254861 is an equidigital number, since it uses as much as digits as its factorization.

254861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5970.

The product of its digits is 1920, while the sum is 26.

The square root of 254861 is about 504.8375976490. The cubic root of 254861 is about 63.4017328123.

The spelling of 254861 in words is "two hundred fifty-four thousand, eight hundred sixty-one".