83802161 has 4 divisors (see below), whose sum is σ = 83842800. Its totient is φ = 83761524.

The previous prime is 83802157. The next prime is 83802181. The reversal of 83802161 is 16120838.

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 83802161 - 2² = 83802157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83802101) 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, 17051 + ... + 21408.

It is an arithmetic number, because the mean of its divisors is an integer number (20960700).

Almost surely, 2^83802161 is an apocalyptic number.

It is an amenable number.

83802161 is a deficient number, since it is larger than the sum of its proper divisors (40639).

83802161 is a wasteful number, since it uses less digits than its factorization.

83802161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40638.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 83802161 is about 9154.3520251299. The cubic root of 83802161 is about 437.6078184336.

Adding to 83802161 its reverse (16120838), we get a palindrome (99922999).

The spelling of 83802161 in words is "eighty-three million, eight hundred two thousand, one hundred sixty-one".