254845 has 4 divisors (see below), whose sum is σ = 305820. Its totient is φ = 203872.

The previous prime is 254833. The next prime is 254857. The reversal of 254845 is 548452.

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

It is an interprime number because it is at equal distance from previous prime (254833) and next prime (254857).

It can be written as a sum of positive squares in 2 ways, for example, as 63001 + 191844 = 251^2 + 438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254845 is a prime.

254845 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25480 + ... + 25489.

It is an arithmetic number, because the mean of its divisors is an integer number (76455).

2²⁵⁴⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

254845 is a deficient number, since it is larger than the sum of its proper divisors (50975).

254845 is an equidigital number, since it uses as much as digits as its factorization.

254845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50974.

The product of its digits is 6400, while the sum is 28.

The square root of 254845 is about 504.8217507200. The cubic root of 254845 is about 63.4004060120.

The spelling of 254845 in words is "two hundred fifty-four thousand, eight hundred forty-five".