56555569 has 8 divisors (see below), whose sum is σ = 64865600. Its totient is φ = 48303216.

The previous prime is 56555567. The next prime is 56555581. The reversal of 56555569 is 96555565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56555569 - 2¹ = 56555567 is a prime.

It is a super-2 number, since 2×56555569² = 6397064769827522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56555561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12294 + ... + 16255.

It is an arithmetic number, because the mean of its divisors is an integer number (8108200).

Almost surely, 2^56555569 is an apocalyptic number.

It is an amenable number.

56555569 is a deficient number, since it is larger than the sum of its proper divisors (8310031).

56555569 is a wasteful number, since it uses less digits than its factorization.

56555569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28839.

The product of its digits is 1012500, while the sum is 46.

The square root of 56555569 is about 7520.3436756574. The cubic root of 56555569 is about 383.8472722536.

It can be divided in two parts, 5655556 and 9, that added together give a palindrome (5655565).

The spelling of 56555569 in words is "fifty-six million, five hundred fifty-five thousand, five hundred sixty-nine".