489533251 has 2 divisors, whose sum is σ = 489533252. Its totient is φ = 489533250.

The previous prime is 489533237. The next prime is 489533269. The reversal of 489533251 is 152335984.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489533251 is a prime.

It is not a weakly prime, because it can be changed into another prime (489533351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244766625 + 244766626.

It is an arithmetic number, because the mean of its divisors is an integer number (244766626).

Almost surely, 2^489533251 is an apocalyptic number.

489533251 is a deficient number, since it is larger than the sum of its proper divisors (1).

489533251 is an equidigital number, since it uses as much as digits as its factorization.

489533251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The square root of 489533251 is about 22125.3983240980. The cubic root of 489533251 is about 788.1231153245.

The spelling of 489533251 in words is "four hundred eighty-nine million, five hundred thirty-three thousand, two hundred fifty-one".