322005161 has 4 divisors (see below), whose sum is σ = 323341524. Its totient is φ = 320668800.

The previous prime is 322005137. The next prime is 322005163. The reversal of 322005161 is 161500223.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 197571136 + 124434025 = 14056^2 + 11155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-322005161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (322005163) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 667820 + ... + 668301.

It is an arithmetic number, because the mean of its divisors is an integer number (80835381).

Almost surely, 2^322005161 is an apocalyptic number.

It is an amenable number.

322005161 is a deficient number, since it is larger than the sum of its proper divisors (1336363).

322005161 is a wasteful number, since it uses less digits than its factorization.

322005161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336362.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 322005161 is about 17944.5022499929. The cubic root of 322005161 is about 685.4160620823.

Adding to 322005161 its reverse (161500223), we get a palindrome (483505384).

The spelling of 322005161 in words is "three hundred twenty-two million, five thousand, one hundred sixty-one".