5771129447 has 4 divisors (see below), whose sum is σ = 5771291736. Its totient is φ = 5770967160.

The previous prime is 5771129443. The next prime is 5771129491. The reversal of 5771129447 is 7449211775.

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 5771129447 - 2² = 5771129443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5771129443) 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, 2204 + ... + 107457.

It is an arithmetic number, because the mean of its divisors is an integer number (1442822934).

Almost surely, 2^5771129447 is an apocalyptic number.

5771129447 is a deficient number, since it is larger than the sum of its proper divisors (162289).

5771129447 is a wasteful number, since it uses less digits than its factorization.

5771129447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162288.

The product of its digits is 493920, while the sum is 47.

The square root of 5771129447 is about 75967.9501303017. The cubic root of 5771129447 is about 1793.7156826029.

The spelling of 5771129447 in words is "five billion, seven hundred seventy-one million, one hundred twenty-nine thousand, four hundred forty-seven".