71533056 has 80 divisors (see below), whose sum is σ = 217825344. Its totient is φ = 20434944.

The previous prime is 71533001. The next prime is 71533057. The reversal of 71533056 is 65033517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71533057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7426 + ... + 14078.

Almost surely, 2^71533056 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 71533056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108912672).

71533056 is an abundant number, since it is smaller than the sum of its proper divisors (146292288).

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

71533056 is an equidigital number, since it uses as much as digits as its factorization.

71533056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6681 (or 6665 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 30.

The square root of 71533056 is about 8457.7216790339. The cubic root of 71533056 is about 415.1154776141.

The spelling of 71533056 in words is "seventy-one million, five hundred thirty-three thousand, fifty-six".