254621 has 4 divisors (see below), whose sum is σ = 257244. Its totient is φ = 252000.

The previous prime is 254593. The next prime is 254623. The reversal of 254621 is 126452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105625 + 148996 = 325^2 + 386^2 .

It is a cyclic number.

It is not a de Polignac number, because 254621 - 2⁶ = 254557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 254593 and 254602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254623) 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, 1160 + ... + 1361.

It is an arithmetic number, because the mean of its divisors is an integer number (64311).

2²⁵⁴⁶²¹ is an apocalyptic number.

It is an amenable number.

254621 is a deficient number, since it is larger than the sum of its proper divisors (2623).

254621 is a wasteful number, since it uses less digits than its factorization.

254621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622.

The product of its digits is 480, while the sum is 20.

The square root of 254621 is about 504.5998414586. The cubic root of 254621 is about 63.3818249740.

The spelling of 254621 in words is "two hundred fifty-four thousand, six hundred twenty-one".