5647321 has 2 divisors, whose sum is σ = 5647322. Its totient is φ = 5647320.

The previous prime is 5647307. The next prime is 5647333. The reversal of 5647321 is 1237465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5470921 + 176400 = 2339^2 + 420^2 .

It is a cyclic number.

It is not a de Polignac number, because 5647321 - 2⁷ = 5647193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5647321.

It is not a weakly prime, because it can be changed into another prime (5647361) 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 as a sum of consecutive naturals, namely, 2823660 + 2823661.

It is an arithmetic number, because the mean of its divisors is an integer number (2823661).

Almost surely, 2^5647321 is an apocalyptic number.

It is an amenable number.

5647321 is a deficient number, since it is larger than the sum of its proper divisors (1).

5647321 is an equidigital number, since it uses as much as digits as its factorization.

5647321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 5647321 is about 2376.4092660988. The cubic root of 5647321 is about 178.0795945004.

The spelling of 5647321 in words is "five million, six hundred forty-seven thousand, three hundred twenty-one".