6821039055 has 8 divisors (see below), whose sum is σ = 10913662512. Its totient is φ = 3637887488.

The previous prime is 6821039039. The next prime is 6821039101. The reversal of 6821039055 is 5509301286.

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 6821039055 - 2⁴ = 6821039039 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227367954 + ... + 227367983.

It is an arithmetic number, because the mean of its divisors is an integer number (1364207814).

Almost surely, 2^6821039055 is an apocalyptic number.

6821039055 is a deficient number, since it is larger than the sum of its proper divisors (4092623457).

6821039055 is a wasteful number, since it uses less digits than its factorization.

6821039055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454735945.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 6821039055 is about 82589.5820003952. The cubic root of 6821039055 is about 1896.4883478866.

The spelling of 6821039055 in words is "six billion, eight hundred twenty-one million, thirty-nine thousand, fifty-five".