322163561 has 4 divisors (see below), whose sum is σ = 325119300. Its totient is φ = 319207824.

The previous prime is 322163533. The next prime is 322163573. The reversal of 322163561 is 165361223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 165361223 = 31 ⋅5334233.

It can be written as a sum of positive squares in 2 ways, for example, as 121771225 + 200392336 = 11035^2 + 14156^2 .

It is a cyclic number.

It is not a de Polignac number, because 322163561 - 2¹⁸ = 321901417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (322163531) 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, 1477706 + ... + 1477923.

It is an arithmetic number, because the mean of its divisors is an integer number (81279825).

Almost surely, 2^322163561 is an apocalyptic number.

It is an amenable number.

322163561 is a deficient number, since it is larger than the sum of its proper divisors (2955739).

322163561 is a wasteful number, since it uses less digits than its factorization.

322163561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955738.

The product of its digits is 6480, while the sum is 29.

The square root of 322163561 is about 17948.9153154167. The cubic root of 322163561 is about 685.5284330624.

The spelling of 322163561 in words is "three hundred twenty-two million, one hundred sixty-three thousand, five hundred sixty-one".