258221 has 8 divisors (see below), whose sum is σ = 274560. Its totient is φ = 242352.

The previous prime is 258211. The next prime is 258233. The reversal of 258221 is 122852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 258221 - 2⁶ = 258157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 258193 and 258202.

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 258221.

It is not an unprimeable number, because it can be changed into a prime (258211) 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, 2315 + ... + 2423.

It is an arithmetic number, because the mean of its divisors is an integer number (34320).

2²⁵⁸²²¹ is an apocalyptic number.

It is an amenable number.

258221 is a deficient number, since it is larger than the sum of its proper divisors (16339).

258221 is a wasteful number, since it uses less digits than its factorization.

258221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235.

The product of its digits is 320, while the sum is 20.

The square root of 258221 is about 508.1545040635. The cubic root of 258221 is about 63.6791395145.

The spelling of 258221 in words is "two hundred fifty-eight thousand, two hundred twenty-one".