33009161 has 2 divisors, whose sum is σ = 33009162. Its totient is φ = 33009160.

The previous prime is 33009149. The next prime is 33009167. The reversal of 33009161 is 16190033.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32993536 + 15625 = 5744^2 + 125^2 .

It is a cyclic number.

It is not a de Polignac number, because 33009161 - 2²² = 28814857 is a prime.

It is not a weakly prime, because it can be changed into another prime (33009167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16504580 + 16504581.

It is an arithmetic number, because the mean of its divisors is an integer number (16504581).

Almost surely, 2^33009161 is an apocalyptic number.

It is an amenable number.

33009161 is a deficient number, since it is larger than the sum of its proper divisors (1).

33009161 is an equidigital number, since it uses as much as digits as its factorization.

33009161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 33009161 is about 5745.3599539106. The cubic root of 33009161 is about 320.7831112858.

Adding to 33009161 its reverse (16190033), we get a palindrome (49199194).

The spelling of 33009161 in words is "thirty-three million, nine thousand, one hundred sixty-one".