52028309 has 2 divisors, whose sum is σ = 52028310. Its totient is φ = 52028308.

The previous prime is 52028299. The next prime is 52028321. The reversal of 52028309 is 90382025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38316100 + 13712209 = 6190^2 + 3703^2 .

It is a cyclic number.

It is not a de Polignac number, because 52028309 - 2⁴ = 52028293 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 (52028329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26014154 + 26014155.

It is an arithmetic number, because the mean of its divisors is an integer number (26014155).

Almost surely, 2^52028309 is an apocalyptic number.

It is an amenable number.

52028309 is a deficient number, since it is larger than the sum of its proper divisors (1).

52028309 is an equidigital number, since it uses as much as digits as its factorization.

52028309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 52028309 is about 7213.0651598332. The cubic root of 52028309 is about 373.3188365084.

The spelling of 52028309 in words is "fifty-two million, twenty-eight thousand, three hundred nine".