322166081 has 4 divisors (see below), whose sum is σ = 322784964. Its totient is φ = 321547200.

The previous prime is 322166057. The next prime is 322166111. The reversal of 322166081 is 180661223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180661223 = 4283 ⋅42181.

It can be written as a sum of positive squares in 2 ways, for example, as 33166081 + 289000000 = 5759^2 + 17000^2 .

It is a cyclic number.

It is not a de Polignac number, because 322166081 - 2¹⁴ = 322149697 is a prime.

It is a super-2 number, since 2×322166081² = 207581967493797122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (322166381) 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, 308660 + ... + 309701.

It is an arithmetic number, because the mean of its divisors is an integer number (80696241).

Almost surely, 2^322166081 is an apocalyptic number.

It is an amenable number.

322166081 is a deficient number, since it is larger than the sum of its proper divisors (618883).

322166081 is an equidigital number, since it uses as much as digits as its factorization.

322166081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618882.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 322166081 is about 17948.9855145075. The cubic root of 322166081 is about 685.5302204849.

The spelling of 322166081 in words is "three hundred twenty-two million, one hundred sixty-six thousand, eighty-one".