330112561 has 3 divisors (see below), whose sum is σ = 330130731. Its totient is φ = 330094392.

The previous prime is 330112553. The next prime is 330112609. The reversal of 330112561 is 165211033.

It is a happy number.

The square root of 330112561 is 18169.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 47872561 + 282240000 = 6919^2 + 16800^2 .

It is not a de Polignac number, because 330112561 - 2³ = 330112553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (330112661) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9085 + ... + 27253.

It is an arithmetic number, because the mean of its divisors is an integer number (110043577).

Almost surely, 2^330112561 is an apocalyptic number.

330112561 is the 18169-th square number.

330112561 is the 9085-th centered octagonal number.

It is an amenable number.

330112561 is a deficient number, since it is larger than the sum of its proper divisors (18170).

330112561 is an frugal number, since it uses more digits than its factorization.

330112561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36338 (or 18169 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The cubic root of 330112561 is about 691.1208841856.

Adding to 330112561 its reverse (165211033), we get a palindrome (495323594).

The spelling of 330112561 in words is "three hundred thirty million, one hundred twelve thousand, five hundred sixty-one".