20117701 has 2 divisors, whose sum is σ = 20117702. Its totient is φ = 20117700.

The previous prime is 20117693. The next prime is 20117707. The reversal of 20117701 is 10771102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19936225 + 181476 = 4465^2 + 426^2 .

It is a cyclic number.

It is not a de Polignac number, because 20117701 - 2³ = 20117693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20117707) 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, 10058850 + 10058851.

It is an arithmetic number, because the mean of its divisors is an integer number (10058851).

Almost surely, 2^20117701 is an apocalyptic number.

It is an amenable number.

20117701 is a deficient number, since it is larger than the sum of its proper divisors (1).

20117701 is an equidigital number, since it uses as much as digits as its factorization.

20117701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98, while the sum is 19.

The square root of 20117701 is about 4485.2760227215. The cubic root of 20117701 is about 271.9732032785.

Adding to 20117701 its reverse (10771102), we get a palindrome (30888803).

The spelling of 20117701 in words is "twenty million, one hundred seventeen thousand, seven hundred one".