75505071 has 4 divisors (see below), whose sum is σ = 100673432. Its totient is φ = 50336712.

The previous prime is 75505061. The next prime is 75505093. The reversal of 75505071 is 17050557.

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

It is not a de Polignac number, because 75505071 - 2⁵ = 75505039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75505051) 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, 12584176 + ... + 12584181.

It is an arithmetic number, because the mean of its divisors is an integer number (25168358).

Almost surely, 2^75505071 is an apocalyptic number.

75505071 is a deficient number, since it is larger than the sum of its proper divisors (25168361).

75505071 is a wasteful number, since it uses less digits than its factorization.

75505071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25168360.

The product of its (nonzero) digits is 6125, while the sum is 30.

The square root of 75505071 is about 8689.3653968515. The cubic root of 75505071 is about 422.6608675140.

It can be divided in two parts, 7550 and 5071, that added together give a palindrome (12621).

The spelling of 75505071 in words is "seventy-five million, five hundred five thousand, seventy-one".