75971071 has 4 divisors (see below), whose sum is σ = 82877544. Its totient is φ = 69064600.

The previous prime is 75971069. The next prime is 75971081. The reversal of 75971071 is 17017957.

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

It is not a de Polignac number, because 75971071 - 2¹ = 75971069 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 75971071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75971081) 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 3 ways as a sum of consecutive naturals, for example, 3453220 + ... + 3453241.

It is an arithmetic number, because the mean of its divisors is an integer number (20719386).

Almost surely, 2^75971071 is an apocalyptic number.

75971071 is a deficient number, since it is larger than the sum of its proper divisors (6906473).

75971071 is a wasteful number, since it uses less digits than its factorization.

75971071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6906472.

The product of its (nonzero) digits is 15435, while the sum is 37.

The square root of 75971071 is about 8716.1385372193. The cubic root of 75971071 is about 423.5286068064.

It can be divided in two parts, 7597 and 1071, that added together give a palindrome (8668).

The spelling of 75971071 in words is "seventy-five million, nine hundred seventy-one thousand, seventy-one".