55543569 has 8 divisors (see below), whose sum is σ = 74100480. Its totient is φ = 37007856.

The previous prime is 55543547. The next prime is 55543571. The reversal of 55543569 is 96534555.

55543569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-55543569 is a prime.

It is a super-2 number, since 2×55543569² = 6170176114515522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 55543569.

It is not an unprimeable number, because it can be changed into a prime (55543529) 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 7 ways as a sum of consecutive naturals, for example, 2427 + ... + 10815.

It is an arithmetic number, because the mean of its divisors is an integer number (9262560).

Almost surely, 2^55543569 is an apocalyptic number.

It is an amenable number.

55543569 is a deficient number, since it is larger than the sum of its proper divisors (18556911).

55543569 is a wasteful number, since it uses less digits than its factorization.

55543569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10599.

The product of its digits is 405000, while the sum is 42.

The square root of 55543569 is about 7452.7557990317. The cubic root of 55543569 is about 381.5439698488.

The spelling of 55543569 in words is "fifty-five million, five hundred forty-three thousand, five hundred sixty-nine".