55099543 has 4 divisors (see below), whose sum is σ = 55614600. Its totient is φ = 54584488.

The previous prime is 55099537. The next prime is 55099571. The reversal of 55099543 is 34599055.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55099543 - 2⁵ = 55099511 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55099496 and 55099505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55099523) 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 3 ways as a sum of consecutive naturals, for example, 257368 + ... + 257581.

It is an arithmetic number, because the mean of its divisors is an integer number (13903650).

Almost surely, 2^55099543 is an apocalyptic number.

55099543 is a deficient number, since it is larger than the sum of its proper divisors (515057).

55099543 is a wasteful number, since it uses less digits than its factorization.

55099543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515056.

The product of its (nonzero) digits is 121500, while the sum is 40.

The square root of 55099543 is about 7422.9066409325. The cubic root of 55099543 is about 380.5245364676.

The spelling of 55099543 in words is "fifty-five million, ninety-nine thousand, five hundred forty-three".