71351444 has 6 divisors (see below), whose sum is σ = 124865034. Its totient is φ = 35675720.

The previous prime is 71351437. The next prime is 71351447. The reversal of 71351444 is 44415317.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 57002500 + 14348944 = 7550^2 + 3788^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71351447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8918927 + ... + 8918934.

It is an arithmetic number, because the mean of its divisors is an integer number (20810839).

Almost surely, 2^71351444 is an apocalyptic number.

It is an amenable number.

71351444 is a deficient number, since it is larger than the sum of its proper divisors (53513590).

71351444 is a wasteful number, since it uses less digits than its factorization.

71351444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17837865 (or 17837863 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 71351444 is about 8446.9783946687. The cubic root of 71351444 is about 414.7638739974.

The spelling of 71351444 in words is "seventy-one million, three hundred fifty-one thousand, four hundred forty-four".