71441111 has 4 divisors (see below), whose sum is σ = 81646992. Its totient is φ = 61235232.

The previous prime is 71441077. The next prime is 71441113. The reversal of 71441111 is 11114417.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71441111 - 2⁶ = 71441047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71441113) 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, 5102930 + ... + 5102943.

It is an arithmetic number, because the mean of its divisors is an integer number (20411748).

Almost surely, 2^71441111 is an apocalyptic number.

71441111 is a deficient number, since it is larger than the sum of its proper divisors (10205881).

71441111 is a wasteful number, since it uses less digits than its factorization.

71441111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10205880.

The product of its digits is 112, while the sum is 20.

The square root of 71441111 is about 8452.2843657795. The cubic root of 71441111 is about 414.9375451570.

Adding to 71441111 its reverse (11114417), we get a palindrome (82555528).

The spelling of 71441111 in words is "seventy-one million, four hundred forty-one thousand, one hundred eleven".