543521603 has 4 divisors (see below), whose sum is σ = 575493480. Its totient is φ = 511549728.

The previous prime is 543521521. The next prime is 543521617. The reversal of 543521603 is 306125345.

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 543521603 - 2⁸ = 543521347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (543521623) 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, 15985913 + ... + 15985946.

It is an arithmetic number, because the mean of its divisors is an integer number (143873370).

Almost surely, 2^543521603 is an apocalyptic number.

543521603 is a deficient number, since it is larger than the sum of its proper divisors (31971877).

543521603 is a wasteful number, since it uses less digits than its factorization.

543521603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31971876.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 543521603 is about 23313.5497726108. The cubic root of 543521603 is about 816.0916546694.

Adding to 543521603 its reverse (306125345), we get a palindrome (849646948).

It can be divided in two parts, 54352 and 1603, that added together give a palindrome (55955).

The spelling of 543521603 in words is "five hundred forty-three million, five hundred twenty-one thousand, six hundred three".