20017141 has 2 divisors, whose sum is σ = 20017142. Its totient is φ = 20017140.

The previous prime is 20017133. The next prime is 20017147. The reversal of 20017141 is 14171002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18740241 + 1276900 = 4329^2 + 1130^2 .

It is a cyclic number.

It is not a de Polignac number, because 20017141 - 2³ = 20017133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20017147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10008570 + 10008571.

It is an arithmetic number, because the mean of its divisors is an integer number (10008571).

Almost surely, 2^20017141 is an apocalyptic number.

It is an amenable number.

20017141 is a deficient number, since it is larger than the sum of its proper divisors (1).

20017141 is an equidigital number, since it uses as much as digits as its factorization.

20017141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 20017141 is about 4474.0519666182. The cubic root of 20017141 is about 271.5192859036.

Adding to 20017141 its reverse (14171002), we get a palindrome (34188143).

The spelling of 20017141 in words is "twenty million, seventeen thousand, one hundred forty-one".