5556191 has 2 divisors, whose sum is σ = 5556192. Its totient is φ = 5556190.

The previous prime is 5556169. The next prime is 5556193. The reversal of 5556191 is 1916555.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5556191 is a prime.

Together with 5556193, 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 (5556193) 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, 2778095 + 2778096.

It is an arithmetic number, because the mean of its divisors is an integer number (2778096).

Almost surely, 2^5556191 is an apocalyptic number.

5556191 is a deficient number, since it is larger than the sum of its proper divisors (1).

5556191 is an equidigital number, since it uses as much as digits as its factorization.

5556191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6750, while the sum is 32.

The square root of 5556191 is about 2357.1573982235. The cubic root of 5556191 is about 177.1165138778.

The spelling of 5556191 in words is "five million, five hundred fifty-six thousand, one hundred ninety-one".