56171 has 2 divisors, whose sum is σ = 56172. Its totient is φ = 56170.

The previous prime is 56167. The next prime is 56179. The reversal of 56171 is 17165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56171 - 2² = 56167 is a prime.

It is an Ulam number.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (56179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28085 + 28086.

It is an arithmetic number, because the mean of its divisors is an integer number (28086).

2⁵⁶¹⁷¹ is an apocalyptic number.

56171 is a deficient number, since it is larger than the sum of its proper divisors (1).

56171 is an equidigital number, since it uses as much as digits as its factorization.

56171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 210, while the sum is 20.

The square root of 56171 is about 237.0042193717. The cubic root of 56171 is about 38.2975258987.

The spelling of 56171 in words is "fifty-six thousand, one hundred seventy-one".