71481041 has 4 divisors (see below), whose sum is σ = 71661492. Its totient is φ = 71300592.

The previous prime is 71481023. The next prime is 71481043. The reversal of 71481041 is 14018417.

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

It can be written as a sum of positive squares in 2 ways, for example, as 56310016 + 15171025 = 7504^2 + 3895^2 .

It is a cyclic number.

It is not a de Polignac number, because 71481041 - 2⁶ = 71480977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71481041.

It is not an unprimeable number, because it can be changed into a prime (71481043) 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, 89630 + ... + 90423.

It is an arithmetic number, because the mean of its divisors is an integer number (17915373).

Almost surely, 2^71481041 is an apocalyptic number.

It is an amenable number.

71481041 is a deficient number, since it is larger than the sum of its proper divisors (180451).

71481041 is a wasteful number, since it uses less digits than its factorization.

71481041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180450.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 71481041 is about 8454.6461191466. The cubic root of 71481041 is about 415.0148366496.

Adding to 71481041 its reverse (14018417), we get a palindrome (85499458).

The spelling of 71481041 in words is "seventy-one million, four hundred eighty-one thousand, forty-one".