20955227 has 2 divisors, whose sum is σ = 20955228. Its totient is φ = 20955226.

The previous prime is 20955199. The next prime is 20955241. The reversal of 20955227 is 72255902.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20955227 - 2¹² = 20951131 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20955193 and 20955202.

It is not a weakly prime, because it can be changed into another prime (20955427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10477613 + 10477614.

It is an arithmetic number, because the mean of its divisors is an integer number (10477614).

Almost surely, 2^20955227 is an apocalyptic number.

20955227 is a deficient number, since it is larger than the sum of its proper divisors (1).

20955227 is an equidigital number, since it uses as much as digits as its factorization.

20955227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 20955227 is about 4577.6879535416. The cubic root of 20955227 is about 275.6962062039.

The spelling of 20955227 in words is "twenty million, nine hundred fifty-five thousand, two hundred twenty-seven".