83196021 has 4 divisors (see below), whose sum is σ = 110928032. Its totient is φ = 55464012.

The previous prime is 83195993. The next prime is 83196053. The reversal of 83196021 is 12069138.

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 not a de Polignac number, because 83196021 - 2⁵ = 83195989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 83196021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83196821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13866001 + ... + 13866006.

It is an arithmetic number, because the mean of its divisors is an integer number (27732008).

Almost surely, 2^83196021 is an apocalyptic number.

It is an amenable number.

83196021 is a deficient number, since it is larger than the sum of its proper divisors (27732011).

83196021 is a wasteful number, since it uses less digits than its factorization.

83196021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27732010.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 83196021 is about 9121.1852848191. The cubic root of 83196021 is about 436.5501937348.

The spelling of 83196021 in words is "eighty-three million, one hundred ninety-six thousand, twenty-one".