83221361 has 8 divisors (see below), whose sum is σ = 84460320. Its totient is φ = 81988192.

The previous prime is 83221339. The next prime is 83221363. The reversal of 83221361 is 16312238.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83221361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83221361.

It is not an unprimeable number, because it can be changed into a prime (83221363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33581 + ... + 35973.

It is an arithmetic number, because the mean of its divisors is an integer number (10557540).

Almost surely, 2^83221361 is an apocalyptic number.

It is an amenable number.

83221361 is a deficient number, since it is larger than the sum of its proper divisors (1238959).

83221361 is a wasteful number, since it uses less digits than its factorization.

83221361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895.

The product of its digits is 1728, while the sum is 26.

The square root of 83221361 is about 9122.5742529179. The cubic root of 83221361 is about 436.5945109945.

Adding to 83221361 its reverse (16312238), we get a palindrome (99533599).

The spelling of 83221361 in words is "eighty-three million, two hundred twenty-one thousand, three hundred sixty-one".