43601321 has 2 divisors, whose sum is σ = 43601322. Its totient is φ = 43601320.

The previous prime is 43601317. The next prime is 43601329. The reversal of 43601321 is 12310634.

43601321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37027225 + 6574096 = 6085^2 + 2564^2 .

It is a cyclic number.

It is not a de Polignac number, because 43601321 - 2² = 43601317 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 43601293 and 43601302.

It is not a weakly prime, because it can be changed into another prime (43601329) 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, 21800660 + 21800661.

It is an arithmetic number, because the mean of its divisors is an integer number (21800661).

Almost surely, 2^43601321 is an apocalyptic number.

It is an amenable number.

43601321 is a deficient number, since it is larger than the sum of its proper divisors (1).

43601321 is an equidigital number, since it uses as much as digits as its factorization.

43601321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 43601321 is about 6603.1296367707. The cubic root of 43601321 is about 351.9653272709.

Adding to 43601321 its reverse (12310634), we get a palindrome (55911955).

The spelling of 43601321 in words is "forty-three million, six hundred one thousand, three hundred twenty-one".