43522241 has 16 divisors (see below), whose sum is σ = 51072000. Its totient is φ = 37072224.

The previous prime is 43522231. The next prime is 43522247. The reversal of 43522241 is 14222534.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-43522241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43522247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76205 + ... + 76773.

It is an arithmetic number, because the mean of its divisors is an integer number (3192000).

Almost surely, 2^43522241 is an apocalyptic number.

It is an amenable number.

43522241 is a deficient number, since it is larger than the sum of its proper divisors (7549759).

43522241 is an equidigital number, since it uses as much as digits as its factorization.

43522241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 799 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 43522241 is about 6597.1388495317. The cubic root of 43522241 is about 351.7524112274.

Adding to 43522241 its reverse (14222534), we get a palindrome (57744775).

The spelling of 43522241 in words is "forty-three million, five hundred twenty-two thousand, two hundred forty-one".