330021145 has 8 divisors (see below), whose sum is σ = 396322056. Its totient is φ = 263819136.

The previous prime is 330021137. The next prime is 330021151. The reversal of 330021145 is 541120033.

It can be written as a sum of positive squares in 4 ways, for example, as 174345616 + 155675529 = 13204^2 + 12477^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 330021145 - 2³ = 330021137 is a prime.

It is a super-2 number, since 2×330021145² = 217827912294222050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17172 + ... + 30901.

It is an arithmetic number, because the mean of its divisors is an integer number (49540257).

Almost surely, 2^330021145 is an apocalyptic number.

It is an amenable number.

330021145 is a deficient number, since it is larger than the sum of its proper divisors (66300911).

330021145 is a wasteful number, since it uses less digits than its factorization.

330021145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49451.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 330021145 is about 18166.4841122326. The cubic root of 330021145 is about 691.0570823727.

Adding to 330021145 its reverse (541120033), we get a palindrome (871141178).

The spelling of 330021145 in words is "three hundred thirty million, twenty-one thousand, one hundred forty-five".