478335551 has 2 divisors, whose sum is σ = 478335552. Its totient is φ = 478335550.

The previous prime is 478335509. The next prime is 478335553. The reversal of 478335551 is 155533874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478335551 - 2²² = 474141247 is a prime.

Together with 478335553, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 478335499 and 478335508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478335553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239167775 + 239167776.

It is an arithmetic number, because the mean of its divisors is an integer number (239167776).

Almost surely, 2^478335551 is an apocalyptic number.

478335551 is a deficient number, since it is larger than the sum of its proper divisors (1).

478335551 is an equidigital number, since it uses as much as digits as its factorization.

478335551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252000, while the sum is 41.

The square root of 478335551 is about 21870.8836355553. The cubic root of 478335551 is about 782.0674665924.

The spelling of 478335551 in words is "four hundred seventy-eight million, three hundred thirty-five thousand, five hundred fifty-one".