82882221 has 4 divisors (see below), whose sum is σ = 110509632. Its totient is φ = 55254812.

The previous prime is 82882213. The next prime is 82882231. The reversal of 82882221 is 12228828.

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 82882221 - 2³ = 82882213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82882201) 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, 13813701 + ... + 13813706.

It is an arithmetic number, because the mean of its divisors is an integer number (27627408).

Almost surely, 2^82882221 is an apocalyptic number.

It is an amenable number.

82882221 is a deficient number, since it is larger than the sum of its proper divisors (27627411).

82882221 is a wasteful number, since it uses less digits than its factorization.

82882221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27627410.

The product of its digits is 8192, while the sum is 33.

The square root of 82882221 is about 9103.9673219976. The cubic root of 82882221 is about 436.0006400266. Note that the first 3 decimals are identical.

The spelling of 82882221 in words is "eighty-two million, eight hundred eighty-two thousand, two hundred twenty-one".