43145017 has 2 divisors, whose sum is σ = 43145018. Its totient is φ = 43145016.

The previous prime is 43145009. The next prime is 43145023. The reversal of 43145017 is 71054134.

43145017 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., 37896336 + 5248681 = 6156^2 + 2291^2 .

It is a cyclic number.

It is not a de Polignac number, because 43145017 - 2³ = 43145009 is a prime.

It is a super-2 number, since 2×43145017² = 3722984983860578, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43144982 and 43145000.

It is not a weakly prime, because it can be changed into another prime (43145057) 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, 21572508 + 21572509.

It is an arithmetic number, because the mean of its divisors is an integer number (21572509).

Almost surely, 2^43145017 is an apocalyptic number.

It is an amenable number.

43145017 is a deficient number, since it is larger than the sum of its proper divisors (1).

43145017 is an equidigital number, since it uses as much as digits as its factorization.

43145017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 43145017 is about 6568.4866598022. The cubic root of 43145017 is about 350.7332031013.

The spelling of 43145017 in words is "forty-three million, one hundred forty-five thousand, seventeen".