83218001 has 2 divisors, whose sum is σ = 83218002. Its totient is φ = 83218000.

The previous prime is 83217991. The next prime is 83218021. The reversal of 83218001 is 10081238.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80120401 + 3097600 = 8951^2 + 1760^2 .

It is a cyclic number.

It is not a de Polignac number, because 83218001 - 2¹⁰ = 83216977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (83218021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41609000 + 41609001.

It is an arithmetic number, because the mean of its divisors is an integer number (41609001).

Almost surely, 2^83218001 is an apocalyptic number.

It is an amenable number.

83218001 is a deficient number, since it is larger than the sum of its proper divisors (1).

83218001 is an equidigital number, since it uses as much as digits as its factorization.

83218001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 83218001 is about 9122.3900925141. The cubic root of 83218001 is about 436.5886351901.

Adding to 83218001 its reverse (10081238), we get a palindrome (93299239).

The spelling of 83218001 in words is "eighty-three million, two hundred eighteen thousand, one".