53078309 has 2 divisors, whose sum is σ = 53078310. Its totient is φ = 53078308.

The previous prime is 53078299. The next prime is 53078317. The reversal of 53078309 is 90387035.

53078309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34845409 + 18232900 = 5903^2 + 4270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53078309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53078329) 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, 26539154 + 26539155.

It is an arithmetic number, because the mean of its divisors is an integer number (26539155).

Almost surely, 2^53078309 is an apocalyptic number.

It is an amenable number.

53078309 is a deficient number, since it is larger than the sum of its proper divisors (1).

53078309 is an equidigital number, since it uses as much as digits as its factorization.

53078309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 53078309 is about 7285.4861883062. The cubic root of 53078309 is about 375.8134849993.

The spelling of 53078309 in words is "fifty-three million, seventy-eight thousand, three hundred nine".