6555427321 has 8 divisors (see below), whose sum is σ = 6657336000. Its totient is φ = 6454244400.

The previous prime is 6555427289. The next prime is 6555427327. The reversal of 6555427321 is 1237245556.

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 6555427321 - 2⁵ = 6555427289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6555427327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163221 + ... + 199378.

It is an arithmetic number, because the mean of its divisors is an integer number (832167000).

Almost surely, 2^6555427321 is an apocalyptic number.

It is an amenable number.

6555427321 is a deficient number, since it is larger than the sum of its proper divisors (101908679).

6555427321 is a wasteful number, since it uses less digits than its factorization.

6555427321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362879.

The product of its digits is 252000, while the sum is 40.

The square root of 6555427321 is about 80965.5934394357. The cubic root of 6555427321 is about 1871.5452659488.

The spelling of 6555427321 in words is "six billion, five hundred fifty-five million, four hundred twenty-seven thousand, three hundred twenty-one".