5531563421 has 4 divisors (see below), whose sum is σ = 5666479644. Its totient is φ = 5396647200.

The previous prime is 5531563417. The next prime is 5531563439. The reversal of 5531563421 is 1243651355.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1408125625 + 4123437796 = 37525^2 + 64214^2 .

It is a cyclic number.

It is not a de Polignac number, because 5531563421 - 2² = 5531563417 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 (5531563441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67458050 + ... + 67458131.

It is an arithmetic number, because the mean of its divisors is an integer number (1416619911).

Almost surely, 2^5531563421 is an apocalyptic number.

It is an amenable number.

5531563421 is a deficient number, since it is larger than the sum of its proper divisors (134916223).

5531563421 is a wasteful number, since it uses less digits than its factorization.

5531563421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134916222.

The product of its digits is 54000, while the sum is 35.

The square root of 5531563421 is about 74374.4809797016. The cubic root of 5531563421 is about 1768.5443915944.

The spelling of 5531563421 in words is "five billion, five hundred thirty-one million, five hundred sixty-three thousand, four hundred twenty-one".