43522081 has 2 divisors, whose sum is σ = 43522082. Its totient is φ = 43522080.

The previous prime is 43522067. The next prime is 43522093. The reversal of 43522081 is 18022534.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25806400 + 17715681 = 5080^2 + 4209^2 .

It is a cyclic number.

It is not a de Polignac number, because 43522081 - 2¹³ = 43513889 is a prime.

It is a super-2 number, since 2×43522081² = 3788343069141122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43522001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21761040 + 21761041.

It is an arithmetic number, because the mean of its divisors is an integer number (21761041).

Almost surely, 2^43522081 is an apocalyptic number.

It is an amenable number.

43522081 is a deficient number, since it is larger than the sum of its proper divisors (1).

43522081 is an equidigital number, since it uses as much as digits as its factorization.

43522081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 43522081 is about 6597.1267230515. The cubic root of 43522081 is about 351.7519801800.

The spelling of 43522081 in words is "forty-three million, five hundred twenty-two thousand, eighty-one".