20100497 has 2 divisors, whose sum is σ = 20100498. Its totient is φ = 20100496.

The previous prime is 20100481. The next prime is 20100527. The reversal of 20100497 is 79400102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15673681 + 4426816 = 3959^2 + 2104^2 .

It is a cyclic number.

It is not a de Polignac number, because 20100497 - 2⁴ = 20100481 is a prime.

It is not a weakly prime, because it can be changed into another prime (20100467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050248 + 10050249.

It is an arithmetic number, because the mean of its divisors is an integer number (10050249).

Almost surely, 2^20100497 is an apocalyptic number.

It is an amenable number.

20100497 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100497 is an equidigital number, since it uses as much as digits as its factorization.

20100497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 20100497 is about 4483.3577818416. The cubic root of 20100497 is about 271.8956536386.

Adding to 20100497 its reverse (79400102), we get a palindrome (99500599).

The spelling of 20100497 in words is "twenty million, one hundred thousand, four hundred ninety-seven".