254987 has 2 divisors, whose sum is σ = 254988. Its totient is φ = 254986.

The previous prime is 254977. The next prime is 254993. The reversal of 254987 is 789452.

It is a happy number.

254987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 254987 - 2⁴ = 254971 is a prime.

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

It is not a weakly prime, because it can be changed into another prime (254927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127493 + 127494.

It is an arithmetic number, because the mean of its divisors is an integer number (127494).

2²⁵⁴⁹⁸⁷ is an apocalyptic number.

254987 is a deficient number, since it is larger than the sum of its proper divisors (1).

254987 is an equidigital number, since it uses as much as digits as its factorization.

254987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 35.

The square root of 254987 is about 504.9623748360. The cubic root of 254987 is about 63.4121794246.

The spelling of 254987 in words is "two hundred fifty-four thousand, nine hundred eighty-seven".