43651241 has 2 divisors, whose sum is σ = 43651242. Its totient is φ = 43651240.

The previous prime is 43651133. The next prime is 43651253. The reversal of 43651241 is 14215634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25969216 + 17682025 = 5096^2 + 4205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43651241 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 43651241.

It is not a weakly prime, because it can be changed into another prime (43654241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21825620 + 21825621.

It is an arithmetic number, because the mean of its divisors is an integer number (21825621).

Almost surely, 2^43651241 is an apocalyptic number.

It is an amenable number.

43651241 is a deficient number, since it is larger than the sum of its proper divisors (1).

43651241 is an equidigital number, since it uses as much as digits as its factorization.

43651241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 26.

The square root of 43651241 is about 6606.9085811747. The cubic root of 43651241 is about 352.0996000218.

Adding to 43651241 its reverse (14215634), we get a palindrome (57866875).

The spelling of 43651241 in words is "forty-three million, six hundred fifty-one thousand, two hundred forty-one".