43485217 has 2 divisors, whose sum is σ = 43485218. Its totient is φ = 43485216.

The previous prime is 43485193. The next prime is 43485227. The reversal of 43485217 is 71258434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43349056 + 136161 = 6584^2 + 369^2 .

It is a cyclic number.

It is not a de Polignac number, because 43485217 - 2⁷ = 43485089 is a prime.

It is not a weakly prime, because it can be changed into another prime (43485227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21742608 + 21742609.

It is an arithmetic number, because the mean of its divisors is an integer number (21742609).

Almost surely, 2^43485217 is an apocalyptic number.

It is an amenable number.

43485217 is a deficient number, since it is larger than the sum of its proper divisors (1).

43485217 is an equidigital number, since it uses as much as digits as its factorization.

43485217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 34.

The square root of 43485217 is about 6594.3321875684. The cubic root of 43485217 is about 351.6526386694.

The spelling of 43485217 in words is "forty-three million, four hundred eighty-five thousand, two hundred seventeen".