54971 has 4 divisors (see below), whose sum is σ = 62832. Its totient is φ = 47112.

The previous prime is 54959. The next prime is 54973. The reversal of 54971 is 17945.

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

It is a cyclic number.

It is not a de Polignac number, because 54971 - 2⁶ = 54907 is a prime.

It is an Ulam number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 54971.

It is not an unprimeable number, because it can be changed into a prime (54973) 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 in 3 ways as a sum of consecutive naturals, for example, 3920 + ... + 3933.

It is an arithmetic number, because the mean of its divisors is an integer number (15708).

2⁵⁴⁹⁷¹ is an apocalyptic number.

54971 is a deficient number, since it is larger than the sum of its proper divisors (7861).

54971 is an equidigital number, since it uses as much as digits as its factorization.

54971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7860.

The product of its digits is 1260, while the sum is 26.

The square root of 54971 is about 234.4589516312. The cubic root of 54971 is about 38.0228394555.

Subtracting from 54971 its sum of digits (26), we obtain a palindrome (54945).

The spelling of 54971 in words is "fifty-four thousand, nine hundred seventy-one".