6171881 has 2 divisors, whose sum is σ = 6171882. Its totient is φ = 6171880.

The previous prime is 6171857. The next prime is 6171887. The reversal of 6171881 is 1881716.

6171881 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3312400 + 2859481 = 1820^2 + 1691^2 .

It is a cyclic number.

It is not a de Polignac number, because 6171881 - 2¹⁴ = 6155497 is a prime.

It is a super-2 number, since 2×6171881² = 76184230156322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6171887) 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, 3085940 + 3085941.

It is an arithmetic number, because the mean of its divisors is an integer number (3085941).

Almost surely, 2^6171881 is an apocalyptic number.

It is an amenable number.

6171881 is a deficient number, since it is larger than the sum of its proper divisors (1).

6171881 is an equidigital number, since it uses as much as digits as its factorization.

6171881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 32.

The square root of 6171881 is about 2484.3270718647. The cubic root of 6171881 is about 183.4309074719.

The spelling of 6171881 in words is "six million, one hundred seventy-one thousand, eight hundred eighty-one".