55885569 has 4 divisors (see below), whose sum is σ = 74514096. Its totient is φ = 37257044.

The previous prime is 55885559. The next prime is 55885589. The reversal of 55885569 is 96558855.

55885569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55885569 - 2⁹ = 55885057 is a prime.

It is a super-2 number, since 2×55885569² = 6246393644907522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55885519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9314259 + ... + 9314264.

It is an arithmetic number, because the mean of its divisors is an integer number (18628524).

Almost surely, 2^55885569 is an apocalyptic number.

It is an amenable number.

55885569 is a deficient number, since it is larger than the sum of its proper divisors (18628527).

55885569 is a wasteful number, since it uses less digits than its factorization.

55885569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18628526.

The product of its digits is 2160000, while the sum is 51.

The square root of 55885569 is about 7475.6651209106. The cubic root of 55885569 is about 382.3254652478.

The spelling of 55885569 in words is "fifty-five million, eight hundred eighty-five thousand, five hundred sixty-nine".