82851321 has 8 divisors (see below), whose sum is σ = 126249664. Its totient is φ = 47343600.

The previous prime is 82851311. The next prime is 82851323. The reversal of 82851321 is 12315828.

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

It is not a de Polignac number, because 82851321 - 2¹⁰ = 82850297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82851323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1972630 + ... + 1972671.

It is an arithmetic number, because the mean of its divisors is an integer number (15781208).

Almost surely, 2^82851321 is an apocalyptic number.

It is an amenable number.

82851321 is a deficient number, since it is larger than the sum of its proper divisors (43398343).

82851321 is a wasteful number, since it uses less digits than its factorization.

82851321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3945311.

The product of its digits is 3840, while the sum is 30.

The square root of 82851321 is about 9102.2701014637. The cubic root of 82851321 is about 435.9464503012.

The spelling of 82851321 in words is "eighty-two million, eight hundred fifty-one thousand, three hundred twenty-one".