43245613 has 2 divisors, whose sum is σ = 43245614. Its totient is φ = 43245612.

The previous prime is 43245599. The next prime is 43245617. The reversal of 43245613 is 31654234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34257609 + 8988004 = 5853^2 + 2998^2 .

It is a cyclic number.

It is not a de Polignac number, because 43245613 - 2⁵ = 43245581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43245617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21622806 + 21622807.

It is an arithmetic number, because the mean of its divisors is an integer number (21622807).

Almost surely, 2^43245613 is an apocalyptic number.

It is an amenable number.

43245613 is a deficient number, since it is larger than the sum of its proper divisors (1).

43245613 is an equidigital number, since it uses as much as digits as its factorization.

43245613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 28.

The square root of 43245613 is about 6576.1396730909. The cubic root of 43245613 is about 351.0055788704.

Adding to 43245613 its reverse (31654234), we get a palindrome (74899847).

The spelling of 43245613 in words is "forty-three million, two hundred forty-five thousand, six hundred thirteen".