71089453 has 4 divisors (see below), whose sum is σ = 71155008. Its totient is φ = 71023900.

The previous prime is 71089429. The next prime is 71089471. The reversal of 71089453 is 35498017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35498017 = 5851 ⋅6067.

It is a cyclic number.

It is not a de Polignac number, because 71089453 - 2²⁵ = 37535021 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 (71089553) 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, 31123 + ... + 33328.

It is an arithmetic number, because the mean of its divisors is an integer number (17788752).

Almost surely, 2^71089453 is an apocalyptic number.

It is an amenable number.

71089453 is a deficient number, since it is larger than the sum of its proper divisors (65555).

71089453 is a wasteful number, since it uses less digits than its factorization.

71089453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65554.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 71089453 is about 8431.4561613045. The cubic root of 71089453 is about 414.2556026979.

It can be divided in two parts, 7108 and 9453, that added together give a palindrome (16561).

The spelling of 71089453 in words is "seventy-one million, eighty-nine thousand, four hundred fifty-three".