5721440251 has 2 divisors, whose sum is σ = 5721440252. Its totient is φ = 5721440250.

The previous prime is 5721440239. The next prime is 5721440267. The reversal of 5721440251 is 1520441275.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5721440251 - 2²⁷ = 5587222523 is a prime.

It is not a weakly prime, because it can be changed into another prime (5721440281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2860720125 + 2860720126.

It is an arithmetic number, because the mean of its divisors is an integer number (2860720126).

Almost surely, 2^5721440251 is an apocalyptic number.

5721440251 is a deficient number, since it is larger than the sum of its proper divisors (1).

5721440251 is an equidigital number, since it uses as much as digits as its factorization.

5721440251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 5721440251 is about 75640.2026107810. The cubic root of 5721440251 is about 1788.5528966710.

The spelling of 5721440251 in words is "five billion, seven hundred twenty-one million, four hundred forty thousand, two hundred fifty-one".