5891321 has 8 divisors (see below), whose sum is σ = 6211080. Its totient is φ = 5579392.

The previous prime is 5891317. The next prime is 5891323. The reversal of 5891321 is 1231985.

It can be written as a sum of positive squares in 4 ways, for example, as 765625 + 5125696 = 875^2 + 2264^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5891321 - 2² = 5891317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5891323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380 + ... + 3453.

It is an arithmetic number, because the mean of its divisors is an integer number (776385).

Almost surely, 2^5891321 is an apocalyptic number.

It is an amenable number.

5891321 is a deficient number, since it is larger than the sum of its proper divisors (319759).

5891321 is a wasteful number, since it uses less digits than its factorization.

5891321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3915.

The product of its digits is 2160, while the sum is 29.

The square root of 5891321 is about 2427.2043589282. The cubic root of 5891321 is about 180.6082407234.

It can be divided in two parts, 5 and 891321, that multiplied together give a triangular number (4456605 = T₂₉₈₅).

The spelling of 5891321 in words is "five million, eight hundred ninety-one thousand, three hundred twenty-one".