55345543 has 8 divisors (see below), whose sum is σ = 62459280. Its totient is φ = 48578880.

The previous prime is 55345519. The next prime is 55345553. The reversal of 55345543 is 34554355.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55345543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55345499 and 55345508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55345553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86430 + ... + 87067.

It is an arithmetic number, because the mean of its divisors is an integer number (7807410).

Almost surely, 2^55345543 is an apocalyptic number.

55345543 is a deficient number, since it is larger than the sum of its proper divisors (7113737).

55345543 is a wasteful number, since it uses less digits than its factorization.

55345543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173537.

The product of its digits is 90000, while the sum is 34.

The square root of 55345543 is about 7439.4585152415. The cubic root of 55345543 is about 381.0899983267.

Adding to 55345543 its reverse (34554355), we get a palindrome (89899898).

The spelling of 55345543 in words is "fifty-five million, three hundred forty-five thousand, five hundred forty-three".