5509221 has 12 divisors (see below), whose sum is σ = 7754112. Its totient is φ = 3478824.

The previous prime is 5509219. The next prime is 5509249. The reversal of 5509221 is 1229055.

It is not a de Polignac number, because 5509221 - 2¹ = 5509219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5509191 and 5509200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5509201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1461 + ... + 3626.

It is an arithmetic number, because the mean of its divisors is an integer number (646176).

Almost surely, 2^5509221 is an apocalyptic number.

It is an amenable number.

5509221 is a deficient number, since it is larger than the sum of its proper divisors (2244891).

5509221 is a wasteful number, since it uses less digits than its factorization.

5509221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5128 (or 5109 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 5509221 is about 2347.1729804171. The cubic root of 5509221 is about 176.6160081801.

The spelling of 5509221 in words is "five million, five hundred nine thousand, two hundred twenty-one".