71531852 has 48 divisors (see below), whose sum is σ = 153054720. Its totient is φ = 28553472.

The previous prime is 71531843. The next prime is 71531879. The reversal of 71531852 is 25813517.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48299 + ... + 49757.

It is an arithmetic number, because the mean of its divisors is an integer number (3188640).

Almost surely, 2^71531852 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 71531852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76527360).

71531852 is an abundant number, since it is smaller than the sum of its proper divisors (81522868).

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

71531852 is a wasteful number, since it uses less digits than its factorization.

71531852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590 (or 1588 counting only the distinct ones).

The product of its digits is 8400, while the sum is 32.

The square root of 71531852 is about 8457.6505011735. The cubic root of 71531852 is about 415.1131486124.

The spelling of 71531852 in words is "seventy-one million, five hundred thirty-one thousand, eight hundred fifty-two".