56360309 has 2 divisors, whose sum is σ = 56360310. Its totient is φ = 56360308.

The previous prime is 56360257. The next prime is 56360341. The reversal of 56360309 is 90306365.

It is an a-pointer prime, because the next prime (56360341) can be obtained adding 56360309 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55457809 + 902500 = 7447^2 + 950^2 .

It is a cyclic number.

It is not a de Polignac number, because 56360309 - 2¹⁶ = 56294773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56360009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28180154 + 28180155.

It is an arithmetic number, because the mean of its divisors is an integer number (28180155).

Almost surely, 2^56360309 is an apocalyptic number.

It is an amenable number.

56360309 is a deficient number, since it is larger than the sum of its proper divisors (1).

56360309 is an equidigital number, since it uses as much as digits as its factorization.

56360309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 32.

The square root of 56360309 is about 7507.3503315084. The cubic root of 56360309 is about 383.4050143625.

The spelling of 56360309 in words is "fifty-six million, three hundred sixty thousand, three hundred nine".