82885321 has 4 divisors (see below), whose sum is σ = 82919700. Its totient is φ = 82850944.

The previous prime is 82885267. The next prime is 82885339. The reversal of 82885321 is 12358828.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30525625 + 52359696 = 5525^2 + 7236^2 .

It is a cyclic number.

It is not a de Polignac number, because 82885321 - 2⁷ = 82885193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82885021) 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, 13276 + ... + 18493.

It is an arithmetic number, because the mean of its divisors is an integer number (20729925).

Almost surely, 2^82885321 is an apocalyptic number.

It is an amenable number.

82885321 is a deficient number, since it is larger than the sum of its proper divisors (34379).

82885321 is a wasteful number, since it uses less digits than its factorization.

82885321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34378.

The product of its digits is 30720, while the sum is 37.

The square root of 82885321 is about 9104.1375758498. The cubic root of 82885321 is about 436.0060757928.

The spelling of 82885321 in words is "eighty-two million, eight hundred eighty-five thousand, three hundred twenty-one".