82252309 has 2 divisors, whose sum is σ = 82252310. Its totient is φ = 82252308.

The previous prime is 82252297. The next prime is 82252319. The reversal of 82252309 is 90325228.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68525284 + 13727025 = 8278^2 + 3705^2 .

It is a cyclic number.

It is not a de Polignac number, because 82252309 - 2¹³ = 82244117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82252319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41126154 + 41126155.

It is an arithmetic number, because the mean of its divisors is an integer number (41126155).

Almost surely, 2^82252309 is an apocalyptic number.

It is an amenable number.

82252309 is a deficient number, since it is larger than the sum of its proper divisors (1).

82252309 is an equidigital number, since it uses as much as digits as its factorization.

82252309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 82252309 is about 9069.3058720059. The cubic root of 82252309 is about 434.8932824927.

The spelling of 82252309 in words is "eighty-two million, two hundred fifty-two thousand, three hundred nine".