6198551 has 2 divisors, whose sum is σ = 6198552. Its totient is φ = 6198550.

The previous prime is 6198529. The next prime is 6198553. The reversal of 6198551 is 1558916.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6198551 is a prime.

Together with 6198553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6198553) 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, 3099275 + 3099276.

It is an arithmetic number, because the mean of its divisors is an integer number (3099276).

Almost surely, 2^6198551 is an apocalyptic number.

6198551 is a deficient number, since it is larger than the sum of its proper divisors (1).

6198551 is an equidigital number, since it uses as much as digits as its factorization.

6198551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 35.

The square root of 6198551 is about 2489.6889363935. The cubic root of 6198551 is about 183.6947423584.

The spelling of 6198551 in words is "six million, one hundred ninety-eight thousand, five hundred fifty-one".