56671 has 2 divisors, whose sum is σ = 56672. Its totient is φ = 56670.

The previous prime is 56663. The next prime is 56681. The reversal of 56671 is 17665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56671 - 2³ = 56663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28335 + 28336.

It is an arithmetic number, because the mean of its divisors is an integer number (28336).

2⁵⁶⁶⁷¹ is an apocalyptic number.

56671 is a deficient number, since it is larger than the sum of its proper divisors (1).

56671 is an equidigital number, since it uses as much as digits as its factorization.

56671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 25.

The square root of 56671 is about 238.0567159313. The cubic root of 56671 is about 38.4108241332.

It can be divided in two parts, 566 and 71, that multiplied together give a triangular number (40186 = T₂₈₃).

The spelling of 56671 in words is "fifty-six thousand, six hundred seventy-one".