71261071 has 16 divisors (see below), whose sum is σ = 83736576. Its totient is φ = 59377536.

The previous prime is 71261063. The next prime is 71261083. The reversal of 71261071 is 17016217.

It is a cyclic number.

It is not a de Polignac number, because 71261071 - 2³ = 71261063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71261471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54295 + ... + 55591.

It is an arithmetic number, because the mean of its divisors is an integer number (5233536).

Almost surely, 2^71261071 is an apocalyptic number.

71261071 is a deficient number, since it is larger than the sum of its proper divisors (12475505).

71261071 is a wasteful number, since it uses less digits than its factorization.

71261071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 71261071 is about 8441.6272720371. The cubic root of 71261071 is about 414.5886881379.

Adding to 71261071 its reverse (17016217), we get a palindrome (88277288).

The spelling of 71261071 in words is "seventy-one million, two hundred sixty-one thousand, seventy-one".