6171091 has 2 divisors, whose sum is σ = 6171092. Its totient is φ = 6171090.

The previous prime is 6171089. The next prime is 6171097. The reversal of 6171091 is 1901716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6171091 - 2¹ = 6171089 is a prime.

Together with 6171089, it forms a pair of twin primes.

It is equal to p₄₂₃₈₁₇ and since 6171091 and 423817 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (6171097) 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, 3085545 + 3085546.

It is an arithmetic number, because the mean of its divisors is an integer number (3085546).

Almost surely, 2^6171091 is an apocalyptic number.

6171091 is a deficient number, since it is larger than the sum of its proper divisors (1).

6171091 is an equidigital number, since it uses as much as digits as its factorization.

6171091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 6171091 is about 2484.1680699985. The cubic root of 6171091 is about 183.4230807602.

The spelling of 6171091 in words is "six million, one hundred seventy-one thousand, ninety-one".