71441 has 4 divisors (see below), whose sum is σ = 72000. Its totient is φ = 70884.

The previous prime is 71437. The next prime is 71443. The reversal of 71441 is 14417.

71441 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14417 = 13 ⋅1109.

It is a cyclic number.

It is not a de Polignac number, because 71441 - 2² = 71437 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (71443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20 + ... + 378.

It is an arithmetic number, because the mean of its divisors is an integer number (18000).

2⁷¹⁴⁴¹ is an apocalyptic number.

It is an amenable number.

71441 is a deficient number, since it is larger than the sum of its proper divisors (559).

71441 is a wasteful number, since it uses less digits than its factorization.

71441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558.

The product of its digits is 112, while the sum is 17.

The square root of 71441 is about 267.2844926291. The cubic root of 71441 is about 41.4937330257.

Adding to 71441 its reverse (14417), we get a palindrome (85858).

It can be divided in two parts, 71 and 441, that added together give a 9-th power (512 = 2⁹).

The spelling of 71441 in words is "seventy-one thousand, four hundred forty-one", and thus it is an iban number.