43523141 has 2 divisors, whose sum is σ = 43523142. Its totient is φ = 43523140.

The previous prime is 43523131. The next prime is 43523143. The reversal of 43523141 is 14132534.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29430625 + 14092516 = 5425^2 + 3754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43523141 is a prime.

Together with 43523143, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_2634314 and since 43523141 and 2634314 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43523143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21761570 + 21761571.

It is an arithmetic number, because the mean of its divisors is an integer number (21761571).

Almost surely, 2^43523141 is an apocalyptic number.

It is an amenable number.

43523141 is a deficient number, since it is larger than the sum of its proper divisors (1).

43523141 is an equidigital number, since it uses as much as digits as its factorization.

43523141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 43523141 is about 6597.2070605674. The cubic root of 43523141 is about 351.7548358497.

Adding to 43523141 its reverse (14132534), we get a palindrome (57655675).

The spelling of 43523141 in words is "forty-three million, five hundred twenty-three thousand, one hundred forty-one".