545006443 has 4 divisors (see below), whose sum is σ = 562587328. Its totient is φ = 527425560.

The previous prime is 545006419. The next prime is 545006447. The reversal of 545006443 is 344600545.

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 545006443 - 2⁹ = 545005931 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 17580853 = 545006443 / (5 + 4 + 5 + 0 + 0 + 6 + 4 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545006447) 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, 8790396 + ... + 8790457.

It is an arithmetic number, because the mean of its divisors is an integer number (140646832).

Almost surely, 2^545006443 is an apocalyptic number.

545006443 is a deficient number, since it is larger than the sum of its proper divisors (17580885).

545006443 is a wasteful number, since it uses less digits than its factorization.

545006443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17580884.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 545006443 is about 23345.3730533483. The cubic root of 545006443 is about 816.8341358811.

Adding to 545006443 its reverse (344600545), we get a palindrome (889606988).

The spelling of 545006443 in words is "five hundred forty-five million, six thousand, four hundred forty-three".