4506221 has 2 divisors, whose sum is σ = 4506222. Its totient is φ = 4506220.

The previous prime is 4506199. The next prime is 4506233. The reversal of 4506221 is 1226054.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3960100 + 546121 = 1990^2 + 739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4506221 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 4506193 and 4506202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4506251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2253110 + 2253111.

It is an arithmetic number, because the mean of its divisors is an integer number (2253111).

Almost surely, 2^4506221 is an apocalyptic number.

It is an amenable number.

4506221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4506221 is an equidigital number, since it uses as much as digits as its factorization.

4506221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 4506221 is about 2122.7861409007. The cubic root of 4506221 is about 165.1724062631.

The spelling of 4506221 in words is "four million, five hundred six thousand, two hundred twenty-one".