478485851 has 2 divisors, whose sum is σ = 478485852. Its totient is φ = 478485850.

The previous prime is 478485841. The next prime is 478485853. The reversal of 478485851 is 158584874.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478485851 is a prime.

It is a Sophie Germain prime.

Together with 478485853, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 478485851.

It is not a weakly prime, because it can be changed into another prime (478485853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239242925 + 239242926.

It is an arithmetic number, because the mean of its divisors is an integer number (239242926).

Almost surely, 2^478485851 is an apocalyptic number.

478485851 is a deficient number, since it is larger than the sum of its proper divisors (1).

478485851 is an equidigital number, since it uses as much as digits as its factorization.

478485851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1433600, while the sum is 50.

The square root of 478485851 is about 21874.3194408420. The cubic root of 478485851 is about 782.1493703457.

The spelling of 478485851 in words is "four hundred seventy-eight million, four hundred eighty-five thousand, eight hundred fifty-one".