5987221 has 2 divisors, whose sum is σ = 5987222. Its totient is φ = 5987220.

The previous prime is 5987183. The next prime is 5987227. The reversal of 5987221 is 1227895.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4452100 + 1535121 = 2110^2 + 1239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5987221 is a prime.

5987221 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5987227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2993610 + 2993611.

It is an arithmetic number, because the mean of its divisors is an integer number (2993611).

Almost surely, 2^5987221 is an apocalyptic number.

It is an amenable number.

5987221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5987221 is an equidigital number, since it uses as much as digits as its factorization.

5987221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 34.

The square root of 5987221 is about 2446.8798499313. The cubic root of 5987221 is about 181.5829621210.

The spelling of 5987221 in words is "five million, nine hundred eighty-seven thousand, two hundred twenty-one".