254749 has 4 divisors (see below), whose sum is σ = 277920. Its totient is φ = 231580.

The previous prime is 254747. The next prime is 254753. The reversal of 254749 is 947452.

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 254749 - 2¹ = 254747 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 254749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254741) 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, 11569 + ... + 11590.

It is an arithmetic number, because the mean of its divisors is an integer number (69480).

2²⁵⁴⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

254749 is a deficient number, since it is larger than the sum of its proper divisors (23171).

254749 is a wasteful number, since it uses less digits than its factorization.

254749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23170.

The product of its digits is 10080, while the sum is 31.

The square root of 254749 is about 504.7266586976. The cubic root of 254749 is about 63.3924440437.

It can be divided in two parts, 25 and 4749, that added together give a palindrome (4774).

The spelling of 254749 in words is "two hundred fifty-four thousand, seven hundred forty-nine".