71043560 has 64 divisors (see below), whose sum is σ = 183409920. Its totient is φ = 24261120.

The previous prime is 71043551. The next prime is 71043569. The reversal of 71043560 is 6534017.

It is an interprime number because it is at equal distance from previous prime (71043551) and next prime (71043569).

It is not an unprimeable number, because it can be changed into a prime (71043569) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 136100 + ... + 136620.

It is an arithmetic number, because the mean of its divisors is an integer number (2865780).

Almost surely, 2^71043560 is an apocalyptic number.

71043560 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71043560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91704960).

71043560 is an abundant number, since it is smaller than the sum of its proper divisors (112366360).

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

71043560 is a wasteful number, since it uses less digits than its factorization.

71043560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026 (or 1022 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 71043560 is about 8428.7341872905. The cubic root of 71043560 is about 414.1664402690.

Adding to 71043560 its reverse (6534017), we get a palindrome (77577577).

The spelling of 71043560 in words is "seventy-one million, forty-three thousand, five hundred sixty".