33530161 has 6 divisors (see below), whose sum is σ = 39004530. Its totient is φ = 28740096.

The previous prime is 33530071. The next prime is 33530179. The reversal of 33530161 is 16103533.

It can be written as a sum of positive squares in only one way, i.e., 21669025 + 11861136 = 4655^2 + 3444^2 .

It is not a de Polignac number, because 33530161 - 2¹⁹ = 33005873 is a prime.

It is a super-2 number, since 2×33530161² = 2248543393371842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33530261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 342096 + ... + 342193.

It is an arithmetic number, because the mean of its divisors is an integer number (6500755).

Almost surely, 2^33530161 is an apocalyptic number.

It is an amenable number.

33530161 is a deficient number, since it is larger than the sum of its proper divisors (5474369).

33530161 is an equidigital number, since it uses as much as digits as its factorization.

33530161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684303 (or 684296 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 33530161 is about 5790.5233787629. The cubic root of 33530161 is about 322.4620022135.

Adding to 33530161 its reverse (16103533), we get a palindrome (49633694).

The spelling of 33530161 in words is "thirty-three million, five hundred thirty thousand, one hundred sixty-one".