56104309 has 2 divisors, whose sum is σ = 56104310. Its totient is φ = 56104308.

The previous prime is 56104261. The next prime is 56104319. The reversal of 56104309 is 90340165.

56104309 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., 44222500 + 11881809 = 6650^2 + 3447^2 .

It is a cyclic number.

It is not a de Polignac number, because 56104309 - 2⁹ = 56103797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56104319) 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, 28052154 + 28052155.

It is an arithmetic number, because the mean of its divisors is an integer number (28052155).

Almost surely, 2^56104309 is an apocalyptic number.

It is an amenable number.

56104309 is a deficient number, since it is larger than the sum of its proper divisors (1).

56104309 is an equidigital number, since it uses as much as digits as its factorization.

56104309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 56104309 is about 7490.2809693629. The cubic root of 56104309 is about 382.8236320039.

The spelling of 56104309 in words is "fifty-six million, one hundred four thousand, three hundred nine".