5643221551 has 8 divisors (see below), whose sum is σ = 6156867024. Its totient is φ = 5129680320.

The previous prime is 5643221527. The next prime is 5643221561. The reversal of 5643221551 is 1551223465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5643221551 - 2¹¹ = 5643219503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5643221561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125481 + ... + 164413.

It is an arithmetic number, because the mean of its divisors is an integer number (769608378).

Almost surely, 2^5643221551 is an apocalyptic number.

5643221551 is a deficient number, since it is larger than the sum of its proper divisors (513645473).

5643221551 is a wasteful number, since it uses less digits than its factorization.

5643221551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52121.

The product of its digits is 36000, while the sum is 34.

The square root of 5643221551 is about 75121.3787879323. The cubic root of 5643221551 is about 1780.3649412699.

The spelling of 5643221551 in words is "five billion, six hundred forty-three million, two hundred twenty-one thousand, five hundred fifty-one".