56655009 has 12 divisors (see below), whose sum is σ = 84657300. Its totient is φ = 36467424.

The previous prime is 56654987. The next prime is 56655023. The reversal of 56655009 is 90055665.

It can be written as a sum of positive squares in 2 ways, for example, as 34187409 + 22467600 = 5847^2 + 4740^2 .

It is not a de Polignac number, because 56655009 - 2¹¹ = 56652961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56655409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108274 + ... + 108795.

It is an arithmetic number, because the mean of its divisors is an integer number (7054775).

Almost surely, 2^56655009 is an apocalyptic number.

It is an amenable number.

56655009 is a deficient number, since it is larger than the sum of its proper divisors (28002291).

56655009 is a wasteful number, since it uses less digits than its factorization.

56655009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217104 (or 217101 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The square root of 56655009 is about 7526.9521720282. The cubic root of 56655009 is about 384.0721096676.

The spelling of 56655009 in words is "fifty-six million, six hundred fifty-five thousand, nine".