105056191 has 2 divisors, whose sum is σ = 105056192. Its totient is φ = 105056190.

The previous prime is 105056173. The next prime is 105056197. The reversal of 105056191 is 191650501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105056191 - 2⁹ = 105055679 is a prime.

It is a super-2 number, since 2×105056191² = 22073606534856962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105056197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52528095 + 52528096.

It is an arithmetic number, because the mean of its divisors is an integer number (52528096).

Almost surely, 2^105056191 is an apocalyptic number.

105056191 is a deficient number, since it is larger than the sum of its proper divisors (1).

105056191 is an equidigital number, since it uses as much as digits as its factorization.

105056191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 28.

The square root of 105056191 is about 10249.6922392821. The cubic root of 105056191 is about 471.8535391962.

The spelling of 105056191 in words is "one hundred five million, fifty-six thousand, one hundred ninety-one".