71443 has 2 divisors, whose sum is σ = 71444. Its totient is φ = 71442.

The previous prime is 71437. The next prime is 71453. The reversal of 71443 is 34417.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71443 - 2⁵ = 71411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71443.

It is not a weakly prime, because it can be changed into another prime (71413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35721 + 35722.

It is an arithmetic number, because the mean of its divisors is an integer number (35722).

2⁷¹⁴⁴³ is an apocalyptic number.

71443 is a deficient number, since it is larger than the sum of its proper divisors (1).

71443 is an equidigital number, since it uses as much as digits as its factorization.

71443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 19.

The square root of 71443 is about 267.2882339348. The cubic root of 71443 is about 41.4941202295.

It can be divided in two parts, 714 and 43, that added together give a palindrome (757).

The spelling of 71443 in words is "seventy-one thousand, four hundred forty-three", and thus it is an iban number.