43533649 has 2 divisors, whose sum is σ = 43533650. Its totient is φ = 43533648.

The previous prime is 43533643. The next prime is 43533653. The reversal of 43533649 is 94633534.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35916049 + 7617600 = 5993^2 + 2760^2 .

It is a cyclic number.

It is not a de Polignac number, because 43533649 - 2¹⁷ = 43402577 is a prime.

It is not a weakly prime, because it can be changed into another prime (43533643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21766824 + 21766825.

It is an arithmetic number, because the mean of its divisors is an integer number (21766825).

Almost surely, 2^43533649 is an apocalyptic number.

It is an amenable number.

43533649 is a deficient number, since it is larger than the sum of its proper divisors (1).

43533649 is an equidigital number, since it uses as much as digits as its factorization.

43533649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 37.

The square root of 43533649 is about 6598.0034101234. The cubic root of 43533649 is about 351.7831421890.

The spelling of 43533649 in words is "forty-three million, five hundred thirty-three thousand, six hundred forty-nine".