4416521 has 2 divisors, whose sum is σ = 4416522. Its totient is φ = 4416520.

The previous prime is 4416499. The next prime is 4416523. The reversal of 4416521 is 1256144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3024121 + 1392400 = 1739^2 + 1180^2 .

It is a cyclic number.

It is not a de Polignac number, because 4416521 - 2¹⁰ = 4415497 is a prime.

Together with 4416523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4416523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2208260 + 2208261.

It is an arithmetic number, because the mean of its divisors is an integer number (2208261).

Almost surely, 2^4416521 is an apocalyptic number.

It is an amenable number.

4416521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4416521 is an equidigital number, since it uses as much as digits as its factorization.

4416521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 23.

The square root of 4416521 is about 2101.5520455130. The cubic root of 4416521 is about 164.0690889750.

The spelling of 4416521 in words is "four million, four hundred sixteen thousand, five hundred twenty-one".