53871 has 4 divisors (see below), whose sum is σ = 71832. Its totient is φ = 35912.

The previous prime is 53861. The next prime is 53881. The reversal of 53871 is 17835.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (53861) and next prime (53881).

It is a cyclic number.

It is not a de Polignac number, because 53871 - 2⁹ = 53359 is a prime.

It is a D-number.

53871 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8976 + ... + 8981.

It is an arithmetic number, because the mean of its divisors is an integer number (17958).

2⁵³⁸⁷¹ is an apocalyptic number.

53871 is a deficient number, since it is larger than the sum of its proper divisors (17961).

53871 is a wasteful number, since it uses less digits than its factorization.

53871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17960.

The product of its digits is 840, while the sum is 24.

The square root of 53871 is about 232.1012710004. The cubic root of 53871 is about 37.7675093840.

The spelling of 53871 in words is "fifty-three thousand, eight hundred seventy-one".