4587221 has 2 divisors, whose sum is σ = 4587222. Its totient is φ = 4587220.

The previous prime is 4587211. The next prime is 4587241. The reversal of 4587221 is 1227854.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3556996 + 1030225 = 1886^2 + 1015^2 .

It is a cyclic number.

It is not a de Polignac number, because 4587221 - 2⁶ = 4587157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4587211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2293610 + 2293611.

It is an arithmetic number, because the mean of its divisors is an integer number (2293611).

Almost surely, 2^4587221 is an apocalyptic number.

It is an amenable number.

4587221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4587221 is an equidigital number, since it uses as much as digits as its factorization.

4587221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 29.

The square root of 4587221 is about 2141.7798673066. The cubic root of 4587221 is about 166.1562012577.

The spelling of 4587221 in words is "four million, five hundred eighty-seven thousand, two hundred twenty-one".