5178191 has 2 divisors, whose sum is σ = 5178192. Its totient is φ = 5178190.

The previous prime is 5178181. The next prime is 5178193. The reversal of 5178191 is 1918715.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5178191 is a prime.

Together with 5178193, 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 (5178193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2589095 + 2589096.

It is an arithmetic number, because the mean of its divisors is an integer number (2589096).

Almost surely, 2^5178191 is an apocalyptic number.

5178191 is a deficient number, since it is larger than the sum of its proper divisors (1).

5178191 is an equidigital number, since it uses as much as digits as its factorization.

5178191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 32.

The square root of 5178191 is about 2275.5638861610. The cubic root of 5178191 is about 173.0052789996.

The spelling of 5178191 in words is "five million, one hundred seventy-eight thousand, one hundred ninety-one".