102305897 has 2 divisors, whose sum is σ = 102305898. Its totient is φ = 102305896.

The previous prime is 102305857. The next prime is 102306007. The reversal of 102305897 is 798503201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95628841 + 6677056 = 9779^2 + 2584^2 .

It is an emirp because it is prime and its reverse (798503201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102305897 - 2¹⁴ = 102289513 is a prime.

It is not a weakly prime, because it can be changed into another prime (102305857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51152948 + 51152949.

It is an arithmetic number, because the mean of its divisors is an integer number (51152949).

Almost surely, 2^102305897 is an apocalyptic number.

It is an amenable number.

102305897 is a deficient number, since it is larger than the sum of its proper divisors (1).

102305897 is an equidigital number, since it uses as much as digits as its factorization.

102305897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 102305897 is about 10114.6377592082. The cubic root of 102305897 is about 467.6994822952.

The spelling of 102305897 in words is "one hundred two million, three hundred five thousand, eight hundred ninety-seven".