43001801 has 2 divisors, whose sum is σ = 43001802. Its totient is φ = 43001800.

The previous prime is 43001773. The next prime is 43001837. The reversal of 43001801 is 10810034.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42510400 + 491401 = 6520^2 + 701^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43001801 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43001801.

It is not a weakly prime, because it can be changed into another prime (43006801) 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, 21500900 + 21500901.

It is an arithmetic number, because the mean of its divisors is an integer number (21500901).

Almost surely, 2^43001801 is an apocalyptic number.

It is an amenable number.

43001801 is a deficient number, since it is larger than the sum of its proper divisors (1).

43001801 is an equidigital number, since it uses as much as digits as its factorization.

43001801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 43001801 is about 6557.5758478267. The cubic root of 43001801 is about 350.3446971486.

Adding to 43001801 its reverse (10810034), we get a palindrome (53811835).

The spelling of 43001801 in words is "forty-three million, one thousand, eight hundred one".