20100097 has 2 divisors, whose sum is σ = 20100098. Its totient is φ = 20100096.

The previous prime is 20100083. The next prime is 20100149. The reversal of 20100097 is 79000102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20079361 + 20736 = 4481^2 + 144^2 .

It is a cyclic number.

It is not a de Polignac number, because 20100097 - 2¹¹ = 20098049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20100397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050048 + 10050049.

It is an arithmetic number, because the mean of its divisors is an integer number (10050049).

Almost surely, 2^20100097 is an apocalyptic number.

It is an amenable number.

20100097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100097 is an equidigital number, since it uses as much as digits as its factorization.

20100097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 20100097 is about 4483.3131721975. The cubic root of 20100097 is about 271.8938500516.

Adding to 20100097 its reverse (79000102), we get a palindrome (99100199).

The spelling of 20100097 in words is "twenty million, one hundred thousand, ninety-seven".