43543441 has 2 divisors, whose sum is σ = 43543442. Its totient is φ = 43543440.

The previous prime is 43543427. The next prime is 43543453. The reversal of 43543441 is 14434534.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22420225 + 21123216 = 4735^2 + 4596^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43543441 is a prime.

It is equal to p_2635480 and since 43543441 and 2635480 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (43546441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21771720 + 21771721.

It is an arithmetic number, because the mean of its divisors is an integer number (21771721).

Almost surely, 2^43543441 is an apocalyptic number.

It is an amenable number.

43543441 is a deficient number, since it is larger than the sum of its proper divisors (1).

43543441 is an equidigital number, since it uses as much as digits as its factorization.

43543441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 28.

The square root of 43543441 is about 6598.7454110611. The cubic root of 43543441 is about 351.8095156753.

Adding to 43543441 its reverse (14434534), we get a palindrome (57977975).

The spelling of 43543441 in words is "forty-three million, five hundred forty-three thousand, four hundred forty-one".