56774309 has 2 divisors, whose sum is σ = 56774310. Its totient is φ = 56774308.

The previous prime is 56774303. The next prime is 56774329. The reversal of 56774309 is 90347765.

56774309 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., 50908225 + 5866084 = 7135^2 + 2422^2 .

It is a cyclic number.

It is not a de Polignac number, because 56774309 - 2⁴ = 56774293 is a prime.

It is a Sophie Germain 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 (56774303) 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, 28387154 + 28387155.

It is an arithmetic number, because the mean of its divisors is an integer number (28387155).

Almost surely, 2^56774309 is an apocalyptic number.

It is an amenable number.

56774309 is a deficient number, since it is larger than the sum of its proper divisors (1).

56774309 is an equidigital number, since it uses as much as digits as its factorization.

56774309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 56774309 is about 7534.8728589141. The cubic root of 56774309 is about 384.3415043762.

The spelling of 56774309 in words is "fifty-six million, seven hundred seventy-four thousand, three hundred nine".