33145161 has 16 divisors (see below), whose sum is σ = 51148800. Its totient is φ = 18699408.

The previous prime is 33145157. The next prime is 33145187. The reversal of 33145161 is 16154133.

It is not a de Polignac number, because 33145161 - 2² = 33145157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (33145111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8331 + ... + 11648.

It is an arithmetic number, because the mean of its divisors is an integer number (3196800).

Almost surely, 2^33145161 is an apocalyptic number.

It is an amenable number.

33145161 is a deficient number, since it is larger than the sum of its proper divisors (18003639).

33145161 is a wasteful number, since it uses less digits than its factorization.

33145161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20068.

The product of its digits is 1080, while the sum is 24.

The square root of 33145161 is about 5757.1834259471. The cubic root of 33145161 is about 321.2230570852.

Adding to 33145161 its reverse (16154133), we get a palindrome (49299294).

The spelling of 33145161 in words is "thirty-three million, one hundred forty-five thousand, one hundred sixty-one".