5543217421 has 16 divisors (see below), whose sum is σ = 6709810176. Its totient is φ = 4470471936.

The previous prime is 5543217409. The next prime is 5543217443. The reversal of 5543217421 is 1247123455.

It is not a de Polignac number, because 5543217421 - 2⁵ = 5543217389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5543217401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 600775 + ... + 609931.

It is an arithmetic number, because the mean of its divisors is an integer number (419363136).

Almost surely, 2^5543217421 is an apocalyptic number.

It is an amenable number.

5543217421 is a deficient number, since it is larger than the sum of its proper divisors (1166592755).

5543217421 is a wasteful number, since it uses less digits than its factorization.

5543217421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14268.

The product of its digits is 33600, while the sum is 34.

The square root of 5543217421 is about 74452.7865227353. The cubic root of 5543217421 is about 1769.7855210554.

It can be divided in two parts, 55 and 43217421, that added together give a square (43217476 = 6574²).

The spelling of 5543217421 in words is "five billion, five hundred forty-three million, two hundred seventeen thousand, four hundred twenty-one".