254945 has 4 divisors (see below), whose sum is σ = 305940. Its totient is φ = 203952.

The previous prime is 254941. The next prime is 254959. The reversal of 254945 is 549452.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 113569 + 141376 = 337^2 + 376^2 .

It is a cyclic number.

It is not a de Polignac number, because 254945 - 2² = 254941 is a prime.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 254945.

It is not an unprimeable number, because it can be changed into a prime (254941) 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, 25490 + ... + 25499.

It is an arithmetic number, because the mean of its divisors is an integer number (76485).

2²⁵⁴⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

254945 is a deficient number, since it is larger than the sum of its proper divisors (50995).

254945 is an equidigital number, since it uses as much as digits as its factorization.

254945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50994.

The product of its digits is 7200, while the sum is 29.

The square root of 254945 is about 504.9207858665. The cubic root of 254945 is about 63.4086976030.

The spelling of 254945 in words is "two hundred fifty-four thousand, nine hundred forty-five".