5526221 has 4 divisors (see below), whose sum is σ = 5531100. Its totient is φ = 5521344.

The previous prime is 5526217. The next prime is 5526239. The reversal of 5526221 is 1226255.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1226255 = 5 ⋅245251.

It can be written as a sum of positive squares in 2 ways, for example, as 5152900 + 373321 = 2270^2 + 611^2 .

It is a cyclic number.

It is not a de Polignac number, because 5526221 - 2² = 5526217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5526251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245 + ... + 3333.

It is an arithmetic number, because the mean of its divisors is an integer number (1382775).

Almost surely, 2^5526221 is an apocalyptic number.

It is an amenable number.

5526221 is a deficient number, since it is larger than the sum of its proper divisors (4879).

5526221 is a wasteful number, since it uses less digits than its factorization.

5526221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878.

The product of its digits is 1200, while the sum is 23.

The square root of 5526221 is about 2350.7915688125. The cubic root of 5526221 is about 176.7974850860.

The spelling of 5526221 in words is "five million, five hundred twenty-six thousand, two hundred twenty-one".