71711053 has 4 divisors (see below), whose sum is σ = 71800288. Its totient is φ = 71621820.

The previous prime is 71711047. The next prime is 71711063. The reversal of 71711053 is 35011717.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71711053 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 (71711023) 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, 43401 + ... + 45022.

It is an arithmetic number, because the mean of its divisors is an integer number (17950072).

Almost surely, 2^71711053 is an apocalyptic number.

It is an amenable number.

71711053 is a deficient number, since it is larger than the sum of its proper divisors (89235).

71711053 is an equidigital number, since it uses as much as digits as its factorization.

71711053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89234.

The product of its (nonzero) digits is 735, while the sum is 25.

The square root of 71711053 is about 8468.2378922654. The cubic root of 71711053 is about 415.4595055441.

The spelling of 71711053 in words is "seventy-one million, seven hundred eleven thousand, fifty-three".