5528921 has 2 divisors, whose sum is σ = 5528922. Its totient is φ = 5528920.

The previous prime is 5528917. The next prime is 5528923. The reversal of 5528921 is 1298255.

5528921 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5125696 + 403225 = 2264^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 5528921 - 2² = 5528917 is a prime.

It is a Sophie Germain prime.

Together with 5528923, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (5528923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2764460 + 2764461.

It is an arithmetic number, because the mean of its divisors is an integer number (2764461).

Almost surely, 2^5528921 is an apocalyptic number.

It is an amenable number.

5528921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5528921 is an equidigital number, since it uses as much as digits as its factorization.

5528921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 32.

The square root of 5528921 is about 2351.3657733326. The cubic root of 5528921 is about 176.8262736252.

The spelling of 5528921 in words is "five million, five hundred twenty-eight thousand, nine hundred twenty-one".