6551879 has 2 divisors, whose sum is σ = 6551880. Its totient is φ = 6551878.

The previous prime is 6551861. The next prime is 6551887. The reversal of 6551879 is 9781556.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6551879 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6551899) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275939 + 3275940.

It is an arithmetic number, because the mean of its divisors is an integer number (3275940).

Almost surely, 2^6551879 is an apocalyptic number.

6551879 is a deficient number, since it is larger than the sum of its proper divisors (1).

6551879 is an equidigital number, since it uses as much as digits as its factorization.

6551879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 41.

The square root of 6551879 is about 2559.6638451172. The cubic root of 6551879 is about 187.1207528397.

The spelling of 6551879 in words is "six million, five hundred fifty-one thousand, eight hundred seventy-nine".