43554281 has 2 divisors, whose sum is σ = 43554282. Its totient is φ = 43554280.

The previous prime is 43554257. The next prime is 43554283. The reversal of 43554281 is 18245534.

43554281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31416025 + 12138256 = 5605^2 + 3484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43554281 is a prime.

It is a super-2 number, since 2×43554281² = 3793950786853922, which contains 22 as substring.

Together with 43554283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43554283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21777140 + 21777141.

It is an arithmetic number, because the mean of its divisors is an integer number (21777141).

Almost surely, 2^43554281 is an apocalyptic number.

It is an amenable number.

43554281 is a deficient number, since it is larger than the sum of its proper divisors (1).

43554281 is an equidigital number, since it uses as much as digits as its factorization.

43554281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19200, while the sum is 32.

The square root of 43554281 is about 6599.5667282027. The cubic root of 43554281 is about 351.8387072033.

The spelling of 43554281 in words is "forty-three million, five hundred fifty-four thousand, two hundred eighty-one".