43356361 has 2 divisors, whose sum is σ = 43356362. Its totient is φ = 43356360.

The previous prime is 43356359. The next prime is 43356367. The reversal of 43356361 is 16365334.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35176761 + 8179600 = 5931^2 + 2860^2 .

It is a cyclic number.

It is not a de Polignac number, because 43356361 - 2¹ = 43356359 is a prime.

Together with 43356359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (43356367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21678180 + 21678181.

It is an arithmetic number, because the mean of its divisors is an integer number (21678181).

Almost surely, 2^43356361 is an apocalyptic number.

It is an amenable number.

43356361 is a deficient number, since it is larger than the sum of its proper divisors (1).

43356361 is an equidigital number, since it uses as much as digits as its factorization.

43356361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 31.

The square root of 43356361 is about 6584.5547305797. The cubic root of 43356361 is about 351.3049543581.

The spelling of 43356361 in words is "forty-three million, three hundred fifty-six thousand, three hundred sixty-one".