5528221 has 4 divisors (see below), whose sum is σ = 5819200. Its totient is φ = 5237244.

The previous prime is 5528189. The next prime is 5528227. The reversal of 5528221 is 1228255.

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 5528221 - 2⁵ = 5528189 is a prime.

It is a super-2 number, since 2×5528221² = 61122454849682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5528227) 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, 145461 + ... + 145498.

It is an arithmetic number, because the mean of its divisors is an integer number (1454800).

Almost surely, 2^5528221 is an apocalyptic number.

It is an amenable number.

5528221 is a deficient number, since it is larger than the sum of its proper divisors (290979).

5528221 is a wasteful number, since it uses less digits than its factorization.

5528221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290978.

The product of its digits is 1600, while the sum is 25.

The square root of 5528221 is about 2351.2169189592. The cubic root of 5528221 is about 176.8188108300.

The spelling of 5528221 in words is "five million, five hundred twenty-eight thousand, two hundred twenty-one".