82220755 has 16 divisors (see below), whose sum is σ = 106445664. Its totient is φ = 60736000.

The previous prime is 82220753. The next prime is 82220759. The reversal of 82220755 is 55702228.

It is not a de Polignac number, because 82220755 - 2¹ = 82220753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82220753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4621 + ... + 13630.

It is an arithmetic number, because the mean of its divisors is an integer number (6652854).

Almost surely, 2^82220755 is an apocalyptic number.

82220755 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

82220755 is a deficient number, since it is larger than the sum of its proper divisors (24224909).

82220755 is a wasteful number, since it uses less digits than its factorization.

82220755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18326.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 82220755 is about 9067.5661012203. The cubic root of 82220755 is about 434.8376634754.

The spelling of 82220755 in words is "eighty-two million, two hundred twenty thousand, seven hundred fifty-five".