102820297 has 2 divisors, whose sum is σ = 102820298. Its totient is φ = 102820296.

The previous prime is 102820271. The next prime is 102820307. The reversal of 102820297 is 792028201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101828281 + 992016 = 10091^2 + 996^2 .

It is a cyclic number.

It is not a de Polignac number, because 102820297 - 2¹¹ = 102818249 is a prime.

It is not a weakly prime, because it can be changed into another prime (102820897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51410148 + 51410149.

It is an arithmetic number, because the mean of its divisors is an integer number (51410149).

Almost surely, 2^102820297 is an apocalyptic number.

It is an amenable number.

102820297 is a deficient number, since it is larger than the sum of its proper divisors (1).

102820297 is an equidigital number, since it uses as much as digits as its factorization.

102820297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 102820297 is about 10140.0343687780. The cubic root of 102820297 is about 468.4820455649.

Adding to 102820297 its reverse (792028201), we get a palindrome (894848498).

The spelling of 102820297 in words is "one hundred two million, eight hundred twenty thousand, two hundred ninety-seven".