5721042787 has 4 divisors (see below), whose sum is σ = 5766090496. Its totient is φ = 5675995080.

The previous prime is 5721042737. The next prime is 5721042799. The reversal of 5721042787 is 7872401275.

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 5721042787 - 2⁷ = 5721042659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5721042737) 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, 22523664 + ... + 22523917.

It is an arithmetic number, because the mean of its divisors is an integer number (1441522624).

Almost surely, 2^5721042787 is an apocalyptic number.

5721042787 is a deficient number, since it is larger than the sum of its proper divisors (45047709).

5721042787 is a wasteful number, since it uses less digits than its factorization.

5721042787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45047708.

The product of its (nonzero) digits is 219520, while the sum is 43.

The square root of 5721042787 is about 75637.5752321556. The cubic root of 5721042787 is about 1788.5114792528.

The spelling of 5721042787 in words is "five billion, seven hundred twenty-one million, forty-two thousand, seven hundred eighty-seven".