71875589 has 4 divisors (see below), whose sum is σ = 72033324. Its totient is φ = 71717856.

The previous prime is 71875567. The next prime is 71875603. The reversal of 71875589 is 98557817.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98557817 = 797 ⋅123661.

It can be written as a sum of positive squares in 2 ways, for example, as 59938564 + 11937025 = 7742^2 + 3455^2 .

It is a cyclic number.

It is not a de Polignac number, because 71875589 - 2⁸ = 71875333 is a prime.

It is a super-2 number, since 2×71875589² = 10332200588193842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71875789) 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, 78182 + ... + 79095.

It is an arithmetic number, because the mean of its divisors is an integer number (18008331).

Almost surely, 2^71875589 is an apocalyptic number.

It is an amenable number.

71875589 is a deficient number, since it is larger than the sum of its proper divisors (157735).

71875589 is a wasteful number, since it uses less digits than its factorization.

71875589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157734.

The product of its digits is 705600, while the sum is 50.

The square root of 71875589 is about 8477.9472161603. The cubic root of 71875589 is about 415.7770104381. Note that the first 3 decimals are identical.

The spelling of 71875589 in words is "seventy-one million, eight hundred seventy-five thousand, five hundred eighty-nine".