254691 has 8 divisors (see below), whose sum is σ = 377360. Its totient is φ = 169776.

The previous prime is 254663. The next prime is 254699. The reversal of 254691 is 196452.

254691 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 254691 - 2⁵ = 254659 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 9433 = 254691 / (2 + 5 + 4 + 6 + 9 + 1).

It is a Duffinian number.

254691 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 254691.

It is not an unprimeable number, because it can be changed into a prime (254699) 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 7 ways as a sum of consecutive naturals, for example, 4690 + ... + 4743.

It is an arithmetic number, because the mean of its divisors is an integer number (47170).

2²⁵⁴⁶⁹¹ is an apocalyptic number.

254691 is a deficient number, since it is larger than the sum of its proper divisors (122669).

254691 is an equidigital number, since it uses as much as digits as its factorization.

254691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9442 (or 9436 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 254691 is about 504.6691985846. The cubic root of 254691 is about 63.3876327186.

The spelling of 254691 in words is "two hundred fifty-four thousand, six hundred ninety-one".