254391 has 8 divisors (see below), whose sum is σ = 357120. Its totient is φ = 160632.

The previous prime is 254389. The next prime is 254407. The reversal of 254391 is 193452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 254391 - 2¹ = 254389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2175 + ... + 2288.

It is an arithmetic number, because the mean of its divisors is an integer number (44640).

2²⁵⁴³⁹¹ is an apocalyptic number.

254391 is a deficient number, since it is larger than the sum of its proper divisors (102729).

254391 is a wasteful number, since it uses less digits than its factorization.

254391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4485.

The product of its digits is 1080, while the sum is 24.

The square root of 254391 is about 504.3718866075. The cubic root of 254391 is about 63.3627348867.

The spelling of 254391 in words is "two hundred fifty-four thousand, three hundred ninety-one".