33172163 has 2 divisors, whose sum is σ = 33172164. Its totient is φ = 33172162.

The previous prime is 33172147. The next prime is 33172189. The reversal of 33172163 is 36127133.

It is an a-pointer prime, because the next prime (33172189) can be obtained adding 33172163 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33172163 - 2⁴ = 33172147 is a prime.

It is a super-2 number, since 2×33172163² = 2200784796197138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33172103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16586081 + 16586082.

It is an arithmetic number, because the mean of its divisors is an integer number (16586082).

Almost surely, 2^33172163 is an apocalyptic number.

33172163 is a deficient number, since it is larger than the sum of its proper divisors (1).

33172163 is an equidigital number, since it uses as much as digits as its factorization.

33172163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 26.

The square root of 33172163 is about 5759.5280188571. The cubic root of 33172163 is about 321.3102624814.

Adding to 33172163 its reverse (36127133), we get a palindrome (69299296).

The spelling of 33172163 in words is "thirty-three million, one hundred seventy-two thousand, one hundred sixty-three".