2157833 has 2 divisors, whose sum is σ = 2157834. Its totient is φ = 2157832.

The previous prime is 2157823. The next prime is 2157839. The reversal of 2157833 is 3387512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2155024 + 2809 = 1468^2 + 53^2 .

It is a cyclic number.

It is not a de Polignac number, because 2157833 - 2⁶ = 2157769 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2157796 and 2157805.

It is not a weakly prime, because it can be changed into another prime (2157839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078916 + 1078917.

It is an arithmetic number, because the mean of its divisors is an integer number (1078917).

2^2157833 is an apocalyptic number.

It is an amenable number.

2157833 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157833 is an equidigital number, since it uses as much as digits as its factorization.

2157833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 2157833 is about 1468.9564323015. The cubic root of 2157833 is about 129.2228386046. Note that the first 3 decimals are identical.

The spelling of 2157833 in words is "two million, one hundred fifty-seven thousand, eight hundred thirty-three".