33161161 has 8 divisors (see below), whose sum is σ = 36360000. Its totient is φ = 29993040.

The previous prime is 33161143. The next prime is 33161171. The reversal of 33161161 is 16116133.

It is a happy number.

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

It is not a de Polignac number, because 33161161 - 2⁹ = 33160649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33161111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5386 + ... + 9763.

It is an arithmetic number, because the mean of its divisors is an integer number (4545000).

Almost surely, 2^33161161 is an apocalyptic number.

It is an amenable number.

33161161 is a deficient number, since it is larger than the sum of its proper divisors (3198839).

33161161 is a wasteful number, since it uses less digits than its factorization.

33161161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15359.

The product of its digits is 324, while the sum is 22.

The square root of 33161161 is about 5758.5728266646. The cubic root of 33161161 is about 321.2747362442.

Adding to 33161161 its reverse (16116133), we get a palindrome (49277294).

The spelling of 33161161 in words is "thirty-three million, one hundred sixty-one thousand, one hundred sixty-one".