358221 has 8 divisors (see below), whose sum is σ = 482944. Its totient is φ = 236160.

The previous prime is 358219. The next prime is 358223. The reversal of 358221 is 122853.

It is an interprime number because it is at equal distance from previous prime (358219) and next prime (358223).

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

It is not a de Polignac number, because 358221 - 2¹ = 358219 is a prime.

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 358221.

It is not an unprimeable number, because it can be changed into a prime (358223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325 + ... + 906.

It is an arithmetic number, because the mean of its divisors is an integer number (60368).

2³⁵⁸²²¹ is an apocalyptic number.

It is an amenable number.

358221 is a deficient number, since it is larger than the sum of its proper divisors (124723).

358221 is a wasteful number, since it uses less digits than its factorization.

358221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331.

The product of its digits is 480, while the sum is 21.

The square root of 358221 is about 598.5156639554. The cubic root of 358221 is about 71.0204926630.

It can be divided in two parts, 35 and 8221, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 358221 in words is "three hundred fifty-eight thousand, two hundred twenty-one".