71575873 has 4 divisors (see below), whose sum is σ = 73321668. Its totient is φ = 69830080.

The previous prime is 71575841. The next prime is 71575883. The reversal of 71575873 is 37857517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37857517 = 23 ⋅1645979.

It can be written as a sum of positive squares in 2 ways, for example, as 19562929 + 52012944 = 4423^2 + 7212^2 .

It is a cyclic number.

It is not a de Polignac number, because 71575873 - 2⁵ = 71575841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71575883) 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, 872836 + ... + 872917.

It is an arithmetic number, because the mean of its divisors is an integer number (18330417).

Almost surely, 2^71575873 is an apocalyptic number.

It is an amenable number.

71575873 is a deficient number, since it is larger than the sum of its proper divisors (1745795).

71575873 is a wasteful number, since it uses less digits than its factorization.

71575873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745794.

The product of its digits is 205800, while the sum is 43.

The square root of 71575873 is about 8460.2525376019. The cubic root of 71575873 is about 415.1982852712.

The spelling of 71575873 in words is "seventy-one million, five hundred seventy-five thousand, eight hundred seventy-three".