5543145021 has 4 divisors (see below), whose sum is σ = 7390860032. Its totient is φ = 3695430012.

The previous prime is 5543145017. The next prime is 5543145043. The reversal of 5543145021 is 1205413455.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5543145021 - 2² = 5543145017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5543145021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5543165021) 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, 923857501 + ... + 923857506.

It is an arithmetic number, because the mean of its divisors is an integer number (1847715008).

Almost surely, 2^5543145021 is an apocalyptic number.

It is an amenable number.

5543145021 is a deficient number, since it is larger than the sum of its proper divisors (1847715011).

5543145021 is a wasteful number, since it uses less digits than its factorization.

5543145021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847715010.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 5543145021 is about 74452.3003069751. The cubic root of 5543145021 is about 1769.7778159617. Note that the first 3 decimals are identical.

Adding to 5543145021 its reverse (1205413455), we get a palindrome (6748558476).

The spelling of 5543145021 in words is "five billion, five hundred forty-three million, one hundred forty-five thousand, twenty-one".