55230709 has 2 divisors, whose sum is σ = 55230710. Its totient is φ = 55230708.

The previous prime is 55230697. The next prime is 55230821. The reversal of 55230709 is 90703255.

It is a happy number.

55230709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31979025 + 23251684 = 5655^2 + 4822^2 .

It is a cyclic number.

It is not a de Polignac number, because 55230709 - 2¹⁷ = 55099637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55230209) 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, 27615354 + 27615355.

It is an arithmetic number, because the mean of its divisors is an integer number (27615355).

Almost surely, 2^55230709 is an apocalyptic number.

It is an amenable number.

55230709 is a deficient number, since it is larger than the sum of its proper divisors (1).

55230709 is an equidigital number, since it uses as much as digits as its factorization.

55230709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 55230709 is about 7431.7366072810. The cubic root of 55230709 is about 380.8262469440.

The spelling of 55230709 in words is "fifty-five million, two hundred thirty thousand, seven hundred nine".