254789 has 4 divisors (see below), whose sum is σ = 263040. Its totient is φ = 246540.

The previous prime is 254783. The next prime is 254791. The reversal of 254789 is 987452.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 254789 - 2⁴ = 254773 is a prime.

It is an Ulam number.

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

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 254789.

It is not an unprimeable number, because it can be changed into a prime (254783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4079 + ... + 4140.

It is an arithmetic number, because the mean of its divisors is an integer number (65760).

2²⁵⁴⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

254789 is a deficient number, since it is larger than the sum of its proper divisors (8251).

254789 is an equidigital number, since it uses as much as digits as its factorization.

254789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8250.

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

The square root of 254789 is about 504.7662825506. The cubic root of 254789 is about 63.3957617736.

The spelling of 254789 in words is "two hundred fifty-four thousand, seven hundred eighty-nine".