5990221 has 2 divisors, whose sum is σ = 5990222. Its totient is φ = 5990220.

The previous prime is 5990213. The next prime is 5990233. The reversal of 5990221 is 1220995.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5616900 + 373321 = 2370^2 + 611^2 .

It is a cyclic number.

It is not a de Polignac number, because 5990221 - 2³ = 5990213 is a prime.

5990221 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5990221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5990251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2995110 + 2995111.

It is an arithmetic number, because the mean of its divisors is an integer number (2995111).

Almost surely, 2^5990221 is an apocalyptic number.

It is an amenable number.

5990221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5990221 is an equidigital number, since it uses as much as digits as its factorization.

5990221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 5990221 is about 2447.4927987637. The cubic root of 5990221 is about 181.6132854784.

The spelling of 5990221 in words is "five million, nine hundred ninety thousand, two hundred twenty-one".