6804551 has 4 divisors (see below), whose sum is σ = 7327992. Its totient is φ = 6281112.

The previous prime is 6804517. The next prime is 6804557. The reversal of 6804551 is 1554086.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6804551 - 2⁶ = 6804487 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 (6804557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261701 + ... + 261726.

It is an arithmetic number, because the mean of its divisors is an integer number (1831998).

Almost surely, 2^6804551 is an apocalyptic number.

6804551 is a deficient number, since it is larger than the sum of its proper divisors (523441).

6804551 is a wasteful number, since it uses less digits than its factorization.

6804551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523440.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 6804551 is about 2608.5534305434. The cubic root of 6804551 is about 189.4959028918.

It can be divided in two parts, 68045 and 51, that multiplied together give a triangular number (3470295 = T₂₆₃₄).

The spelling of 6804551 in words is "six million, eight hundred four thousand, five hundred fifty-one".