254251 has 4 divisors (see below), whose sum is σ = 257904. Its totient is φ = 250600.

The previous prime is 254249. The next prime is 254257. The reversal of 254251 is 152452.

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 254251 - 2¹ = 254249 is a prime.

It is an Ulam number.

It is a Duffinian number.

254251 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (254257) 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, 1720 + ... + 1861.

It is an arithmetic number, because the mean of its divisors is an integer number (64476).

2²⁵⁴²⁵¹ is an apocalyptic number.

254251 is the 226-th centered decagonal number.

254251 is a deficient number, since it is larger than the sum of its proper divisors (3653).

254251 is an equidigital number, since it uses as much as digits as its factorization.

254251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3652.

The product of its digits is 400, while the sum is 19.

The square root of 254251 is about 504.2330810250. The cubic root of 254251 is about 63.3511091993.

It can be divided in two parts, 254 and 251, that added together give a palindrome (505).

The spelling of 254251 in words is "two hundred fifty-four thousand, two hundred fifty-one".