163222361 has 4 divisors (see below), whose sum is σ = 164124324. Its totient is φ = 162320400.

The previous prime is 163222357. The next prime is 163222373.

163222361 is nontrivially palindromic in base 10.

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 61716736 + 101505625 = 7856^2 + 10075^2 .

It is a cyclic number.

It is not a de Polignac number, because 163222361 - 2² = 163222357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163222361.

It is not an unprimeable number, because it can be changed into a prime (163222391) 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, 450710 + ... + 451071.

It is an arithmetic number, because the mean of its divisors is an integer number (41031081).

Almost surely, 2^163222361 is an apocalyptic number.

It is an amenable number.

163222361 is a deficient number, since it is larger than the sum of its proper divisors (901963).

163222361 is an equidigital number, since it uses as much as digits as its factorization.

163222361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901962.

The product of its digits is 2592, while the sum is 26.

The square root of 163222361 is about 12775.8506957463. The cubic root of 163222361 is about 546.5038408501.

The spelling of 163222361 in words is "one hundred sixty-three million, two hundred twenty-two thousand, three hundred sixty-one".