5891221 has 12 divisors (see below), whose sum is σ = 6894720. Its totient is φ = 5019000.

The previous prime is 5891219. The next prime is 5891227. The reversal of 5891221 is 1221985.

It is not a de Polignac number, because 5891221 - 2¹ = 5891219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5891221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5891227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12060 + ... + 12538.

It is an arithmetic number, because the mean of its divisors is an integer number (574560).

Almost surely, 2^5891221 is an apocalyptic number.

It is an amenable number.

5891221 is a deficient number, since it is larger than the sum of its proper divisors (1003499).

5891221 is a wasteful number, since it uses less digits than its factorization.

5891221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744 (or 737 counting only the distinct ones).

The product of its digits is 1440, while the sum is 28.

The square root of 5891221 is about 2427.1837590096. The cubic root of 5891221 is about 180.6072188289.

The spelling of 5891221 in words is "five million, eight hundred ninety-one thousand, two hundred twenty-one".