71051872 has 24 divisors (see below), whose sum is σ = 141248016. Its totient is φ = 35179392.

The previous prime is 71051843. The next prime is 71051873. The reversal of 71051872 is 27815017.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71051873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7483 + ... + 14074.

It is an arithmetic number, because the mean of its divisors is an integer number (5885334).

Almost surely, 2^71051872 is an apocalyptic number.

It is an amenable number.

71051872 is a deficient number, since it is larger than the sum of its proper divisors (70196144).

71051872 is a wasteful number, since it uses less digits than its factorization.

71051872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21670 (or 21662 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 71051872 is about 8429.2272480934. The cubic root of 71051872 is about 414.1825919428.

Adding to 71051872 its reverse (27815017), we get a palindrome (98866889).

The spelling of 71051872 in words is "seventy-one million, fifty-one thousand, eight hundred seventy-two".