71533552 has 40 divisors (see below), whose sum is σ = 148651200. Its totient is φ = 33226752.

The previous prime is 71533549. The next prime is 71533601. The reversal of 71533552 is 25533517.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19824 + ... + 23152.

It is an arithmetic number, because the mean of its divisors is an integer number (3716280).

Almost surely, 2^71533552 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 71533552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74325600).

71533552 is an abundant number, since it is smaller than the sum of its proper divisors (77117648).

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

71533552 is a wasteful number, since it uses less digits than its factorization.

71533552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3433 (or 3427 counting only the distinct ones).

The product of its digits is 15750, while the sum is 31.

The square root of 71533552 is about 8457.7510013005. The cubic root of 71533552 is about 415.1164370624.

The spelling of 71533552 in words is "seventy-one million, five hundred thirty-three thousand, five hundred fifty-two".