83591121 has 8 divisors (see below), whose sum is σ = 111858304. Its totient is φ = 55525680.

The previous prime is 83591117. The next prime is 83591147. The reversal of 83591121 is 12119538.

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

It is not a de Polignac number, because 83591121 - 2² = 83591117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83591111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49465 + ... + 51126.

It is an arithmetic number, because the mean of its divisors is an integer number (13982288).

Almost surely, 2^83591121 is an apocalyptic number.

It is an amenable number.

83591121 is a deficient number, since it is larger than the sum of its proper divisors (28267183).

83591121 is a wasteful number, since it uses less digits than its factorization.

83591121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100871.

The product of its digits is 2160, while the sum is 30.

The square root of 83591121 is about 9142.8180010323. The cubic root of 83591121 is about 437.2401652773.

The spelling of 83591121 in words is "eighty-three million, five hundred ninety-one thousand, one hundred twenty-one".