5191191227 has 2 divisors, whose sum is σ = 5191191228. Its totient is φ = 5191191226.

The previous prime is 5191191209. The next prime is 5191191251. The reversal of 5191191227 is 7221911915.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5191191227 - 2³⁰ = 4117449403 is a prime.

It is not a weakly prime, because it can be changed into another prime (5191191277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2595595613 + 2595595614.

It is an arithmetic number, because the mean of its divisors is an integer number (2595595614).

Almost surely, 2^5191191227 is an apocalyptic number.

5191191227 is a deficient number, since it is larger than the sum of its proper divisors (1).

5191191227 is an equidigital number, since it uses as much as digits as its factorization.

5191191227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 38.

The square root of 5191191227 is about 72049.9217695620. The cubic root of 5191191227 is about 1731.4993880690.

The spelling of 5191191227 in words is "five billion, one hundred ninety-one million, one hundred ninety-one thousand, two hundred twenty-seven".