20855333 has 2 divisors, whose sum is σ = 20855334. Its totient is φ = 20855332.

The previous prime is 20855287. The next prime is 20855371. The reversal of 20855333 is 33355802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14615329 + 6240004 = 3823^2 + 2498^2 .

It is a cyclic number.

It is not a de Polignac number, because 20855333 - 2⁶ = 20855269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20855296 and 20855305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20855633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10427666 + 10427667.

It is an arithmetic number, because the mean of its divisors is an integer number (10427667).

Almost surely, 2^20855333 is an apocalyptic number.

It is an amenable number.

20855333 is a deficient number, since it is larger than the sum of its proper divisors (1).

20855333 is an equidigital number, since it uses as much as digits as its factorization.

20855333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 20855333 is about 4566.7639527350. The cubic root of 20855333 is about 275.2574250672.

The spelling of 20855333 in words is "twenty million, eight hundred fifty-five thousand, three hundred thirty-three".