71051712 has 28 divisors (see below), whose sum is σ = 187991496. Its totient is φ = 23683840.

The previous prime is 71051699. The next prime is 71051713. The reversal of 71051712 is 21715017.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71051713) 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, 184839 + ... + 185222.

It is an arithmetic number, because the mean of its divisors is an integer number (6713982).

Almost surely, 2^71051712 is an apocalyptic number.

It is an amenable number.

71051712 is an abundant number, since it is smaller than the sum of its proper divisors (116939784).

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

71051712 is a wasteful number, since it uses less digits than its factorization.

71051712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370076 (or 370066 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 24.

The square root of 71051712 is about 8429.2177573011. The cubic root of 71051712 is about 414.1822810466.

Adding to 71051712 its reverse (21715017), we get a palindrome (92766729).

The spelling of 71051712 in words is "seventy-one million, fifty-one thousand, seven hundred twelve".