65600251 has 2 divisors, whose sum is σ = 65600252. Its totient is φ = 65600250.

The previous prime is 65600243. The next prime is 65600279. The reversal of 65600251 is 15200656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65600251 - 2³ = 65600243 is a prime.

It is not a weakly prime, because it can be changed into another prime (65600201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32800125 + 32800126.

It is an arithmetic number, because the mean of its divisors is an integer number (32800126).

Almost surely, 2^65600251 is an apocalyptic number.

65600251 is a deficient number, since it is larger than the sum of its proper divisors (1).

65600251 is an equidigital number, since it uses as much as digits as its factorization.

65600251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 65600251 is about 8099.3981875199. The cubic root of 65600251 is about 403.3064494220.

The spelling of 65600251 in words is "sixty-five million, six hundred thousand, two hundred fifty-one".