83365221 has 4 divisors (see below), whose sum is σ = 111153632. Its totient is φ = 55576812.

The previous prime is 83365201. The next prime is 83365241. The reversal of 83365221 is 12256338.

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 an interprime number because it is at equal distance from previous prime (83365201) and next prime (83365241).

It is not a de Polignac number, because 83365221 - 2⁵ = 83365189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83365201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13894201 + ... + 13894206.

It is an arithmetic number, because the mean of its divisors is an integer number (27788408).

Almost surely, 2^83365221 is an apocalyptic number.

It is an amenable number.

83365221 is a deficient number, since it is larger than the sum of its proper divisors (27788411).

83365221 is a wasteful number, since it uses less digits than its factorization.

83365221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27788410.

The product of its digits is 8640, while the sum is 30.

The square root of 83365221 is about 9130.4556841376. The cubic root of 83365221 is about 436.8459381488.

The spelling of 83365221 in words is "eighty-three million, three hundred sixty-five thousand, two hundred twenty-one".