254387 has 4 divisors (see below), whose sum is σ = 290736. Its totient is φ = 218040.

The previous prime is 254383. The next prime is 254389. The reversal of 254387 is 783452.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 254387 - 2² = 254383 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254383) 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, 18164 + ... + 18177.

It is an arithmetic number, because the mean of its divisors is an integer number (72684).

2²⁵⁴³⁸⁷ is an apocalyptic number.

254387 is a deficient number, since it is larger than the sum of its proper divisors (36349).

254387 is an equidigital number, since it uses as much as digits as its factorization.

254387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36348.

The product of its digits is 6720, while the sum is 29.

The square root of 254387 is about 504.3679212638. The cubic root of 254387 is about 63.3624027834.

The spelling of 254387 in words is "two hundred fifty-four thousand, three hundred eighty-seven".