6801551 has 2 divisors, whose sum is σ = 6801552. Its totient is φ = 6801550.

The previous prime is 6801541. The next prime is 6801559. The reversal of 6801551 is 1551086.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6801551 is a prime.

It is a super-2 number, since 2×6801551² = 92522192011202, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6801551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6801559) 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 as a sum of consecutive naturals, namely, 3400775 + 3400776.

It is an arithmetic number, because the mean of its divisors is an integer number (3400776).

Almost surely, 2^6801551 is an apocalyptic number.

6801551 is a deficient number, since it is larger than the sum of its proper divisors (1).

6801551 is an equidigital number, since it uses as much as digits as its factorization.

6801551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 6801551 is about 2607.9783357996. The cubic root of 6801551 is about 189.4680503916.

The spelling of 6801551 in words is "six million, eight hundred one thousand, five hundred fifty-one".