2166233 has 2 divisors, whose sum is σ = 2166234. Its totient is φ = 2166232.

The previous prime is 2166221. The next prime is 2166251. The reversal of 2166233 is 3326612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1721344 + 444889 = 1312^2 + 667^2 .

It is a cyclic number.

It is not a de Polignac number, because 2166233 - 2¹² = 2162137 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 1 + 6² + 6⁵ + 2²¹ + 3⁷ + 3¹⁰ .

It is a junction number, because it is equal to n+sod(n) for n = 2166199 and 2166208.

It is not a weakly prime, because it can be changed into another prime (2166533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083116 + 1083117.

It is an arithmetic number, because the mean of its divisors is an integer number (1083117).

2^2166233 is an apocalyptic number.

It is an amenable number.

2166233 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166233 is an equidigital number, since it uses as much as digits as its factorization.

2166233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 23.

The square root of 2166233 is about 1471.8128277740. The cubic root of 2166233 is about 129.3903008034.

The spelling of 2166233 in words is "two million, one hundred sixty-six thousand, two hundred thirty-three".