54221 has 4 divisors (see below), whose sum is σ = 55200. Its totient is φ = 53244.

The previous prime is 54217. The next prime is 54251. The reversal of 54221 is 12245.

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 54221 - 2² = 54217 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 54196 and 54205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54251) 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, 401 + ... + 518.

It is an arithmetic number, because the mean of its divisors is an integer number (13800).

2⁵⁴²²¹ is an apocalyptic number.

It is an amenable number.

54221 is a deficient number, since it is larger than the sum of its proper divisors (979).

54221 is an equidigital number, since it uses as much as digits as its factorization.

54221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978.

The product of its digits is 80, while the sum is 14.

The square root of 54221 is about 232.8540315305. The cubic root of 54221 is about 37.8491247492.

Adding to 54221 its reverse (12245), we get a palindrome (66466).

The spelling of 54221 in words is "fifty-four thousand, two hundred twenty-one".