15671 has 2 divisors, whose sum is σ = 15672. Its totient is φ = 15670.

The previous prime is 15667. The next prime is 15679. The reversal of 15671 is 17651.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15671 - 2² = 15667 is a prime.

It is a Chen prime.

It is equal to p₁₈₂₉ and since 15671 and 1829 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 15671.

It is not a weakly prime, because it can be changed into another prime (15679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7835 + 7836.

It is an arithmetic number, because the mean of its divisors is an integer number (7836).

2¹⁵⁶⁷¹ is an apocalyptic number.

15671 is a deficient number, since it is larger than the sum of its proper divisors (1).

15671 is an equidigital number, since it uses as much as digits as its factorization.

15671 is an evil number, because the sum of its binary digits is even.

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

The square root of 15671 is about 125.1838647750. The cubic root of 15671 is about 25.0245092973.

Subtracting from 15671 its sum of digits (20), we obtain a palindrome (15651).

It can be divided in two parts, 15 and 671, that added together give a palindrome (686).

The spelling of 15671 in words is "fifteen thousand, six hundred seventy-one".