43240559 has 2 divisors, whose sum is σ = 43240560. Its totient is φ = 43240558.

The previous prime is 43240543. The next prime is 43240573. The reversal of 43240559 is 95504234.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43240559 - 2⁴ = 43240543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43240459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21620279 + 21620280.

It is an arithmetic number, because the mean of its divisors is an integer number (21620280).

Almost surely, 2^43240559 is an apocalyptic number.

43240559 is a deficient number, since it is larger than the sum of its proper divisors (1).

43240559 is an equidigital number, since it uses as much as digits as its factorization.

43240559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 43240559 is about 6575.7553938692. The cubic root of 43240559 is about 350.9919046409.

The spelling of 43240559 in words is "forty-three million, two hundred forty thousand, five hundred fifty-nine".