82212655 has 16 divisors (see below), whose sum is σ = 112896000. Its totient is φ = 56300832.

The previous prime is 82212653. The next prime is 82212659. The reversal of 82212655 is 55621228.

It is not a de Polignac number, because 82212655 - 2¹ = 82212653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82212653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51682 + ... + 53248.

It is an arithmetic number, because the mean of its divisors is an integer number (7056000).

Almost surely, 2^82212655 is an apocalyptic number.

82212655 is a deficient number, since it is larger than the sum of its proper divisors (30683345).

82212655 is a wasteful number, since it uses less digits than its factorization.

82212655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3078.

The product of its digits is 9600, while the sum is 31.

The square root of 82212655 is about 9067.1194433513. The cubic root of 82212655 is about 434.8233836230.

The spelling of 82212655 in words is "eighty-two million, two hundred twelve thousand, six hundred fifty-five".