56608009 has 2 divisors, whose sum is σ = 56608010. Its totient is φ = 56608008.

The previous prime is 56607983. The next prime is 56608031. The reversal of 56608009 is 90080665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53875600 + 2732409 = 7340^2 + 1653^2 .

It is a cyclic number.

It is not a de Polignac number, because 56608009 - 2¹⁵ = 56575241 is a prime.

It is not a weakly prime, because it can be changed into another prime (56608109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28304004 + 28304005.

It is an arithmetic number, because the mean of its divisors is an integer number (28304005).

Almost surely, 2^56608009 is an apocalyptic number.

It is an amenable number.

56608009 is a deficient number, since it is larger than the sum of its proper divisors (1).

56608009 is an equidigital number, since it uses as much as digits as its factorization.

56608009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 56608009 is about 7523.8294106127. The cubic root of 56608009 is about 383.9658737938.

The spelling of 56608009 in words is "fifty-six million, six hundred eight thousand, nine".