20771041 has 2 divisors, whose sum is σ = 20771042. Its totient is φ = 20771040.

The previous prime is 20771029. The next prime is 20771057. The reversal of 20771041 is 14017702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18533025 + 2238016 = 4305^2 + 1496^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20771041 is a prime.

It is a super-2 number, since 2×20771041² = 862872288447362, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20771081) 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, 10385520 + 10385521.

It is an arithmetic number, because the mean of its divisors is an integer number (10385521).

Almost surely, 2^20771041 is an apocalyptic number.

It is an amenable number.

20771041 is a deficient number, since it is larger than the sum of its proper divisors (1).

20771041 is an equidigital number, since it uses as much as digits as its factorization.

20771041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 20771041 is about 4557.5257541785. The cubic root of 20771041 is about 274.8860839474.

Adding to 20771041 its reverse (14017702), we get a palindrome (34788743).

The spelling of 20771041 in words is "twenty million, seven hundred seventy-one thousand, forty-one".