83211641 has 4 divisors (see below), whose sum is σ = 83451792. Its totient is φ = 82971492.

The previous prime is 83211637. The next prime is 83211647. The reversal of 83211641 is 14611238.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83211641 - 2² = 83211637 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 83211641.

It is not an unprimeable number, because it can be changed into a prime (83211647) 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 3 ways as a sum of consecutive naturals, for example, 119555 + ... + 120248.

It is an arithmetic number, because the mean of its divisors is an integer number (20862948).

Almost surely, 2^83211641 is an apocalyptic number.

It is an amenable number.

83211641 is a deficient number, since it is larger than the sum of its proper divisors (240151).

83211641 is a wasteful number, since it uses less digits than its factorization.

83211641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240150.

The product of its digits is 1152, while the sum is 26.

The square root of 83211641 is about 9122.0414929993. The cubic root of 83211641 is about 436.5775126989.

Adding to 83211641 its reverse (14611238), we get a palindrome (97822879).

The spelling of 83211641 in words is "eighty-three million, two hundred eleven thousand, six hundred forty-one".