56608109 has 2 divisors, whose sum is σ = 56608110. Its totient is φ = 56608108.

The previous prime is 56608093. The next prime is 56608117. The reversal of 56608109 is 90180665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55547209 + 1060900 = 7453^2 + 1030^2 .

It is a cyclic number.

It is not a de Polignac number, because 56608109 - 2⁴ = 56608093 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 (56608009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28304054 + 28304055.

It is an arithmetic number, because the mean of its divisors is an integer number (28304055).

Almost surely, 2^56608109 is an apocalyptic number.

It is an amenable number.

56608109 is a deficient number, since it is larger than the sum of its proper divisors (1).

56608109 is an equidigital number, since it uses as much as digits as its factorization.

56608109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 56608109 is about 7523.8360561618. The cubic root of 56608109 is about 383.9660998900.

The spelling of 56608109 in words is "fifty-six million, six hundred eight thousand, one hundred nine".