489091553 has 2 divisors, whose sum is σ = 489091554. Its totient is φ = 489091552.

The previous prime is 489091531. The next prime is 489091571. The reversal of 489091553 is 355190984.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 466214464 + 22877089 = 21592^2 + 4783^2 .

It is a cyclic number.

It is not a de Polignac number, because 489091553 - 2⁶ = 489091489 is a prime.

It is not a weakly prime, because it can be changed into another prime (489091753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244545776 + 244545777.

It is an arithmetic number, because the mean of its divisors is an integer number (244545777).

Almost surely, 2^489091553 is an apocalyptic number.

It is an amenable number.

489091553 is a deficient number, since it is larger than the sum of its proper divisors (1).

489091553 is an equidigital number, since it uses as much as digits as its factorization.

489091553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 489091553 is about 22115.4143754984. The cubic root of 489091553 is about 787.8860070488.

The spelling of 489091553 in words is "four hundred eighty-nine million, ninety-one thousand, five hundred fifty-three".