5220221 has 8 divisors (see below), whose sum is σ = 5311488. Its totient is φ = 5130000.

The previous prime is 5220217. The next prime is 5220223. The reversal of 5220221 is 1220225.

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 5220221 - 2² = 5220217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5220196 and 5220205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5220223) 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, 27236 + ... + 27426.

It is an arithmetic number, because the mean of its divisors is an integer number (663936).

Almost surely, 2^5220221 is an apocalyptic number.

It is an amenable number.

5220221 is a deficient number, since it is larger than the sum of its proper divisors (91267).

5220221 is a wasteful number, since it uses less digits than its factorization.

5220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523.

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

The square root of 5220221 is about 2284.7802957834. The cubic root of 5220221 is about 173.4720975430.

Adding to 5220221 its reverse (1220225), we get a palindrome (6440446).

The spelling of 5220221 in words is "five million, two hundred twenty thousand, two hundred twenty-one".