5721503861 has 2 divisors, whose sum is σ = 5721503862. Its totient is φ = 5721503860.

The previous prime is 5721503789. The next prime is 5721503903. The reversal of 5721503861 is 1683051275.

5721503861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3295448836 + 2426055025 = 57406^2 + 49255^2 .

It is a cyclic number.

It is not a de Polignac number, because 5721503861 - 2¹⁸ = 5721241717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5721503461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2860751930 + 2860751931.

It is an arithmetic number, because the mean of its divisors is an integer number (2860751931).

Almost surely, 2^5721503861 is an apocalyptic number.

It is an amenable number.

5721503861 is a deficient number, since it is larger than the sum of its proper divisors (1).

5721503861 is an equidigital number, since it uses as much as digits as its factorization.

5721503861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 5721503861 is about 75640.6230870688. The cubic root of 5721503861 is about 1788.5595249221.

The spelling of 5721503861 in words is "five billion, seven hundred twenty-one million, five hundred three thousand, eight hundred sixty-one".