485128291 has 2 divisors, whose sum is σ = 485128292. Its totient is φ = 485128290.

The previous prime is 485128247. The next prime is 485128333. The reversal of 485128291 is 192821584.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 485128291 - 2¹³ = 485120099 is a prime.

It is not a weakly prime, because it can be changed into another prime (485128591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242564145 + 242564146.

It is an arithmetic number, because the mean of its divisors is an integer number (242564146).

Almost surely, 2^485128291 is an apocalyptic number.

485128291 is a deficient number, since it is larger than the sum of its proper divisors (1).

485128291 is an equidigital number, since it uses as much as digits as its factorization.

485128291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 40.

The square root of 485128291 is about 22025.6280500693. The cubic root of 485128291 is about 785.7520703010.

The spelling of 485128291 in words is "four hundred eighty-five million, one hundred twenty-eight thousand, two hundred ninety-one".