545550043 has 4 divisors (see below), whose sum is σ = 577641240. Its totient is φ = 513458848.

The previous prime is 545550017. The next prime is 545550067. The reversal of 545550043 is 340055545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340055545 = 5 ⋅68011109.

It is a cyclic number.

It is not a de Polignac number, because 545550043 - 2¹⁷ = 545418971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 545549987 and 545550014.

It is not an unprimeable number, because it can be changed into a prime (545550143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16045573 + ... + 16045606.

It is an arithmetic number, because the mean of its divisors is an integer number (144410310).

Almost surely, 2^545550043 is an apocalyptic number.

545550043 is a deficient number, since it is larger than the sum of its proper divisors (32091197).

545550043 is a wasteful number, since it uses less digits than its factorization.

545550043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32091196.

The product of its (nonzero) digits is 30000, while the sum is 31.

The square root of 545550043 is about 23357.0127156706. The cubic root of 545550043 is about 817.1056210444.

The spelling of 545550043 in words is "five hundred forty-five million, five hundred fifty thousand, forty-three".