478353121 has 2 divisors, whose sum is σ = 478353122. Its totient is φ = 478353120.

The previous prime is 478353097. The next prime is 478353163. The reversal of 478353121 is 121353874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 290361600 + 187991521 = 17040^2 + 13711^2 .

It is a cyclic number.

It is not a de Polignac number, because 478353121 - 2¹¹ = 478351073 is a prime.

It is not a weakly prime, because it can be changed into another prime (478350121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239176560 + 239176561.

It is an arithmetic number, because the mean of its divisors is an integer number (239176561).

Almost surely, 2^478353121 is an apocalyptic number.

It is an amenable number.

478353121 is a deficient number, since it is larger than the sum of its proper divisors (1).

478353121 is an equidigital number, since it uses as much as digits as its factorization.

478353121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 478353121 is about 21871.2853074528. The cubic root of 478353121 is about 782.0770419885.

The spelling of 478353121 in words is "four hundred seventy-eight million, three hundred fifty-three thousand, one hundred twenty-one".