71053520 has 40 divisors (see below), whose sum is σ = 166822656. Its totient is φ = 28142208.

The previous prime is 71053447. The next prime is 71053553. The reversal of 71053520 is 2535017.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3929 + ... + 12551.

Almost surely, 2^71053520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71053520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83411328).

71053520 is an abundant number, since it is smaller than the sum of its proper divisors (95769136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71053520 is a wasteful number, since it uses less digits than its factorization.

71053520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8739 (or 8733 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 71053520 is about 8429.3250026322. The cubic root of 71053520 is about 414.1857941461.

Adding to 71053520 its reverse (2535017), we get a palindrome (73588537).

The spelling of 71053520 in words is "seventy-one million, fifty-three thousand, five hundred twenty".