82216556 has 24 divisors (see below), whose sum is σ = 152981136. Its totient is φ = 38528000.

The previous prime is 82216529. The next prime is 82216567. The reversal of 82216556 is 65561228.

It is a super-2 number, since 2×82216556² = 13519124161002272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14660 + ... + 19476.

It is an arithmetic number, because the mean of its divisors is an integer number (6374214).

Almost surely, 2^82216556 is an apocalyptic number.

It is an amenable number.

82216556 is a deficient number, since it is larger than the sum of its proper divisors (70764580).

82216556 is a wasteful number, since it uses less digits than its factorization.

82216556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5089 (or 5087 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 82216556 is about 9067.3345587333. The cubic root of 82216556 is about 434.8302609875.

The spelling of 82216556 in words is "eighty-two million, two hundred sixteen thousand, five hundred fifty-six".