56686171 has 2 divisors, whose sum is σ = 56686172. Its totient is φ = 56686170.

The previous prime is 56686151. The next prime is 56686181. The reversal of 56686171 is 17168665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56686171 - 2⁷ = 56686043 is a prime.

It is not a weakly prime, because it can be changed into another prime (56686151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28343085 + 28343086.

It is an arithmetic number, because the mean of its divisors is an integer number (28343086).

Almost surely, 2^56686171 is an apocalyptic number.

56686171 is a deficient number, since it is larger than the sum of its proper divisors (1).

56686171 is an equidigital number, since it uses as much as digits as its factorization.

56686171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 56686171 is about 7529.0219152291. The cubic root of 56686171 is about 384.1425139245.

The spelling of 56686171 in words is "fifty-six million, six hundred eighty-six thousand, one hundred seventy-one".