33166261 has 2 divisors, whose sum is σ = 33166262. Its totient is φ = 33166260.

The previous prime is 33166247. The next prime is 33166277. The reversal of 33166261 is 16266133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20421361 + 12744900 = 4519^2 + 3570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33166261 is a prime.

It is a super-2 number, since 2×33166261² = 2200001737440242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33166241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16583130 + 16583131.

It is an arithmetic number, because the mean of its divisors is an integer number (16583131).

Almost surely, 2^33166261 is an apocalyptic number.

It is an amenable number.

33166261 is a deficient number, since it is larger than the sum of its proper divisors (1).

33166261 is an equidigital number, since it uses as much as digits as its factorization.

33166261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 28.

The square root of 33166261 is about 5759.0156276919. The cubic root of 33166261 is about 321.2912054823.

The spelling of 33166261 in words is "thirty-three million, one hundred sixty-six thousand, two hundred sixty-one".