163230561 has 24 divisors (see below), whose sum is σ = 254345000. Its totient is φ = 100279296.

The previous prime is 163230523. The next prime is 163230581. The reversal of 163230561 is 165032361.

It can be written as a sum of positive squares in 4 ways, for example, as 2954961 + 160275600 = 1719^2 + 12660^2 .

It is not a de Polignac number, because 163230561 - 2¹⁸ = 162968417 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (163230581) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130065 + ... + 131313.

Almost surely, 2^163230561 is an apocalyptic number.

It is an amenable number.

163230561 is a deficient number, since it is larger than the sum of its proper divisors (91114439).

163230561 is a wasteful number, since it uses less digits than its factorization.

163230561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385 (or 2382 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 163230561 is about 12776.1716096803. The cubic root of 163230561 is about 546.5129924893.

The spelling of 163230561 in words is "one hundred sixty-three million, two hundred thirty thousand, five hundred sixty-one".