20652271 has 2 divisors, whose sum is σ = 20652272. Its totient is φ = 20652270.

The previous prime is 20652239. The next prime is 20652277. The reversal of 20652271 is 17225602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20652271 - 2⁵ = 20652239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20652277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10326135 + 10326136.

It is an arithmetic number, because the mean of its divisors is an integer number (10326136).

Almost surely, 2^20652271 is an apocalyptic number.

20652271 is a deficient number, since it is larger than the sum of its proper divisors (1).

20652271 is an equidigital number, since it uses as much as digits as its factorization.

20652271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 20652271 is about 4544.4769776070. The cubic root of 20652271 is about 274.3611440121.

Adding to 20652271 its reverse (17225602), we get a palindrome (37877873).

The spelling of 20652271 in words is "twenty million, six hundred fifty-two thousand, two hundred seventy-one".