43216441 has 2 divisors, whose sum is σ = 43216442. Its totient is φ = 43216440.

The previous prime is 43216403. The next prime is 43216457. The reversal of 43216441 is 14461234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41011216 + 2205225 = 6404^2 + 1485^2 .

It is a cyclic number.

It is not a de Polignac number, because 43216441 - 2¹¹ = 43214393 is a prime.

It is not a weakly prime, because it can be changed into another prime (43216741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21608220 + 21608221.

It is an arithmetic number, because the mean of its divisors is an integer number (21608221).

Almost surely, 2^43216441 is an apocalyptic number.

It is an amenable number.

43216441 is a deficient number, since it is larger than the sum of its proper divisors (1).

43216441 is an equidigital number, since it uses as much as digits as its factorization.

43216441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 25.

The square root of 43216441 is about 6573.9212803319. The cubic root of 43216441 is about 350.9266356951.

Adding to 43216441 its reverse (14461234), we get a palindrome (57677675).

The spelling of 43216441 in words is "forty-three million, two hundred sixteen thousand, four hundred forty-one".