71575745 has 16 divisors (see below), whose sum is σ = 89236992. Its totient is φ = 55054080.

The previous prime is 71575711. The next prime is 71575837. The reversal of 71575745 is 54757517.

It is a happy number.

It is not a de Polignac number, because 71575745 - 2¹⁸ = 71313601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23849 + ... + 26681.

It is an arithmetic number, because the mean of its divisors is an integer number (5577312).

Almost surely, 2^71575745 is an apocalyptic number.

It is an amenable number.

71575745 is a deficient number, since it is larger than the sum of its proper divisors (17661247).

71575745 is a wasteful number, since it uses less digits than its factorization.

71575745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032.

The product of its digits is 171500, while the sum is 41.

The square root of 71575745 is about 8460.2449728125. The cubic root of 71575745 is about 415.1980377696.

The spelling of 71575745 in words is "seventy-one million, five hundred seventy-five thousand, seven hundred forty-five".