5721851249 has 2 divisors, whose sum is σ = 5721851250. Its totient is φ = 5721851248.

The previous prime is 5721851237. The next prime is 5721851251. The reversal of 5721851249 is 9421581275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4330561249 + 1391290000 = 65807^2 + 37300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5721851249 is a prime.

Together with 5721851251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5721851549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2860925624 + 2860925625.

It is an arithmetic number, because the mean of its divisors is an integer number (2860925625).

Almost surely, 2^5721851249 is an apocalyptic number.

It is an amenable number.

5721851249 is a deficient number, since it is larger than the sum of its proper divisors (1).

5721851249 is an equidigital number, since it uses as much as digits as its factorization.

5721851249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 44.

The square root of 5721851249 is about 75642.9193579941. The cubic root of 5721851249 is about 1788.5957223716.

The spelling of 5721851249 in words is "five billion, seven hundred twenty-one million, eight hundred fifty-one thousand, two hundred forty-nine".