43518941 has 2 divisors, whose sum is σ = 43518942. Its totient is φ = 43518940.

The previous prime is 43518901. The next prime is 43518973. The reversal of 43518941 is 14981534.

43518941 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34692100 + 8826841 = 5890^2 + 2971^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43518941 is a prime.

It is a super-2 number, since 2×43518941² = 3787796451522962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43518901) 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, 21759470 + 21759471.

It is an arithmetic number, because the mean of its divisors is an integer number (21759471).

Almost surely, 2^43518941 is an apocalyptic number.

It is an amenable number.

43518941 is a deficient number, since it is larger than the sum of its proper divisors (1).

43518941 is an equidigital number, since it uses as much as digits as its factorization.

43518941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 35.

The square root of 43518941 is about 6596.8887363666. Note that the first 3 decimals coincide. The cubic root of 43518941 is about 351.7435206597.

The spelling of 43518941 in words is "forty-three million, five hundred eighteen thousand, nine hundred forty-one".