43240573 has 2 divisors, whose sum is σ = 43240574. Its totient is φ = 43240572.

The previous prime is 43240559. The next prime is 43240583. The reversal of 43240573 is 37504234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40411449 + 2829124 = 6357^2 + 1682^2 .

It is a cyclic number.

It is not a de Polignac number, because 43240573 - 2⁵ = 43240541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43240513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21620286 + 21620287.

It is an arithmetic number, because the mean of its divisors is an integer number (21620287).

Almost surely, 2^43240573 is an apocalyptic number.

It is an amenable number.

43240573 is a deficient number, since it is larger than the sum of its proper divisors (1).

43240573 is an equidigital number, since it uses as much as digits as its factorization.

43240573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 43240573 is about 6575.7564583856. The cubic root of 43240573 is about 350.9919425211.

The spelling of 43240573 in words is "forty-three million, two hundred forty thousand, five hundred seventy-three".