71493 has 4 divisors (see below), whose sum is σ = 95328. Its totient is φ = 47660.

The previous prime is 71483. The next prime is 71503. The reversal of 71493 is 39417.

71493 is nontrivially palindromic in base 11.

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.

It is an interprime number because it is at equal distance from previous prime (71483) and next prime (71503).

It is a cyclic number.

It is not a de Polignac number, because 71493 - 2⁶ = 71429 is a prime.

It is a super-2 number, since 2×71493² = 10222498098, which contains 22 as substring.

It is a D-number.

71493 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71413) 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, 11913 + ... + 11918.

It is an arithmetic number, because the mean of its divisors is an integer number (23832).

2⁷¹⁴⁹³ is an apocalyptic number.

It is an amenable number.

71493 is a deficient number, since it is larger than the sum of its proper divisors (23835).

71493 is a wasteful number, since it uses less digits than its factorization.

71493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23834.

The product of its digits is 756, while the sum is 24.

The square root of 71493 is about 267.3817495642. The cubic root of 71493 is about 41.5037979782.

Adding to 71493 its sum of digits (24), we get a palindrome (71517).

The spelling of 71493 in words is "seventy-one thousand, four hundred ninety-three".