5721297129 has 24 divisors (see below), whose sum is σ = 8351222880. Its totient is φ = 3774169728.

The previous prime is 5721297077. The next prime is 5721297133. The reversal of 5721297129 is 9217921275.

5721297129 is a `hidden beast` number, since 572 + 1 + 2 + 9 + 71 + 2 + 9 = 666.

It is not a de Polignac number, because 5721297129 - 2⁸ = 5721296873 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5721297629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 376609 + ... + 391505.

It is an arithmetic number, because the mean of its divisors is an integer number (347967620).

Almost surely, 2^5721297129 is an apocalyptic number.

It is an amenable number.

5721297129 is a deficient number, since it is larger than the sum of its proper divisors (2629925751).

5721297129 is a wasteful number, since it uses less digits than its factorization.

5721297129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15349 (or 15346 counting only the distinct ones).

The product of its digits is 158760, while the sum is 45.

The square root of 5721297129 is about 75639.2565338925. The cubic root of 5721297129 is about 1788.5379829784.

The spelling of 5721297129 in words is "five billion, seven hundred twenty-one million, two hundred ninety-seven thousand, one hundred twenty-nine".