102452309 has 2 divisors, whose sum is σ = 102452310. Its totient is φ = 102452308.

The previous prime is 102452239. The next prime is 102452321. The reversal of 102452309 is 903254201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54538225 + 47914084 = 7385^2 + 6922^2 .

It is a cyclic number.

It is not a de Polignac number, because 102452309 - 2¹⁶ = 102386773 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102457309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51226154 + 51226155.

It is an arithmetic number, because the mean of its divisors is an integer number (51226155).

Almost surely, 2^102452309 is an apocalyptic number.

It is an amenable number.

102452309 is a deficient number, since it is larger than the sum of its proper divisors (1).

102452309 is an equidigital number, since it uses as much as digits as its factorization.

102452309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 102452309 is about 10121.8728010186. The cubic root of 102452309 is about 467.9224872844.

The spelling of 102452309 in words is "one hundred two million, four hundred fifty-two thousand, three hundred nine".