5191321 has 4 divisors (see below), whose sum is σ = 5203044. Its totient is φ = 5179600.

The previous prime is 5191301. The next prime is 5191331. The reversal of 5191321 is 1231915.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3857296 + 1334025 = 1964^2 + 1155^2 .

It is a cyclic number.

It is not a de Polignac number, because 5191321 - 2⁵ = 5191289 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5191292 and 5191301.

It is not an unprimeable number, because it can be changed into a prime (5191301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5170 + ... + 6091.

It is an arithmetic number, because the mean of its divisors is an integer number (1300761).

Almost surely, 2^5191321 is an apocalyptic number.

It is an amenable number.

5191321 is a deficient number, since it is larger than the sum of its proper divisors (11723).

5191321 is a wasteful number, since it uses less digits than its factorization.

5191321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11722.

The product of its digits is 270, while the sum is 22.

The square root of 5191321 is about 2278.4470588539. The cubic root of 5191321 is about 173.1513816356.

The spelling of 5191321 in words is "five million, one hundred ninety-one thousand, three hundred twenty-one".