71145575 has 6 divisors (see below), whose sum is σ = 88220544. Its totient is φ = 56916440.

The previous prime is 71145559. The next prime is 71145577. The reversal of 71145575 is 57554117.

It is not a de Polignac number, because 71145575 - 2⁴ = 71145559 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 (71145577) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1422887 + ... + 1422936.

It is an arithmetic number, because the mean of its divisors is an integer number (14703424).

Almost surely, 2^71145575 is an apocalyptic number.

71145575 is a deficient number, since it is larger than the sum of its proper divisors (17074969).

71145575 is a wasteful number, since it uses less digits than its factorization.

71145575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2845833 (or 2845828 counting only the distinct ones).

The product of its digits is 24500, while the sum is 35.

The square root of 71145575 is about 8434.7836368220. The cubic root of 71145575 is about 414.3645862234.

The spelling of 71145575 in words is "seventy-one million, one hundred forty-five thousand, five hundred seventy-five".