5245445657 has 2 divisors, whose sum is σ = 5245445658. Its totient is φ = 5245445656.

The previous prime is 5245445651. The next prime is 5245445683. The reversal of 5245445657 is 7565445425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3413948041 + 1831497616 = 58429^2 + 42796^2 .

It is a cyclic number.

It is not a de Polignac number, because 5245445657 - 2⁶ = 5245445593 is a prime.

It is not a weakly prime, because it can be changed into another prime (5245445651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2622722828 + 2622722829.

It is an arithmetic number, because the mean of its divisors is an integer number (2622722829).

Almost surely, 2^5245445657 is an apocalyptic number.

It is an amenable number.

5245445657 is a deficient number, since it is larger than the sum of its proper divisors (1).

5245445657 is an equidigital number, since it uses as much as digits as its factorization.

5245445657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360000, while the sum is 47.

The square root of 5245445657 is about 72425.4489596026. The cubic root of 5245445657 is about 1737.5106050592.

The spelling of 5245445657 in words is "five billion, two hundred forty-five million, four hundred forty-five thousand, six hundred fifty-seven".