53430709 has 2 divisors, whose sum is σ = 53430710. Its totient is φ = 53430708.

The previous prime is 53430697. The next prime is 53430719. The reversal of 53430709 is 90703435.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34751025 + 18679684 = 5895^2 + 4322^2 .

It is a cyclic number.

It is not a de Polignac number, because 53430709 - 2⁹ = 53430197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53430719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26715354 + 26715355.

It is an arithmetic number, because the mean of its divisors is an integer number (26715355).

Almost surely, 2^53430709 is an apocalyptic number.

It is an amenable number.

53430709 is a deficient number, since it is larger than the sum of its proper divisors (1).

53430709 is an equidigital number, since it uses as much as digits as its factorization.

53430709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 53430709 is about 7309.6312492492. The cubic root of 53430709 is about 376.6433572997.

The spelling of 53430709 in words is "fifty-three million, four hundred thirty thousand, seven hundred nine".