20763271 has 2 divisors, whose sum is σ = 20763272. Its totient is φ = 20763270.

The previous prime is 20763269. The next prime is 20763283. The reversal of 20763271 is 17236702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20763271 - 2¹ = 20763269 is a prime.

It is a super-2 number, since 2×20763271² = 862226845238882, which contains 22 as substring.

Together with 20763269, it forms a pair of twin primes.

It is equal to p_1315963 and since 20763271 and 1315963 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20763251) 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, 10381635 + 10381636.

It is an arithmetic number, because the mean of its divisors is an integer number (10381636).

Almost surely, 2^20763271 is an apocalyptic number.

20763271 is a deficient number, since it is larger than the sum of its proper divisors (1).

20763271 is an equidigital number, since it uses as much as digits as its factorization.

20763271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 20763271 is about 4556.6732382298. The cubic root of 20763271 is about 274.8518033472.

Adding to 20763271 its reverse (17236702), we get a palindrome (37999973).

The spelling of 20763271 in words is "twenty million, seven hundred sixty-three thousand, two hundred seventy-one".