20002097 has 2 divisors, whose sum is σ = 20002098. Its totient is φ = 20002096.

The previous prime is 20002067. The next prime is 20002123. The reversal of 20002097 is 79020002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19088161 + 913936 = 4369^2 + 956^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002097 - 2⁸ = 20001841 is a prime.

It is not a weakly prime, because it can be changed into another prime (20002007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001048 + 10001049.

It is an arithmetic number, because the mean of its divisors is an integer number (10001049).

Almost surely, 2^20002097 is an apocalyptic number.

It is an amenable number.

20002097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002097 is an equidigital number, since it uses as much as digits as its factorization.

20002097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 20002097 is about 4472.3704005818. The cubic root of 20002097 is about 271.4512482175.

Adding to 20002097 its reverse (79020002), we get a palindrome (99022099).

The spelling of 20002097 in words is "twenty million, two thousand, ninety-seven".