478257555 has 8 divisors (see below), whose sum is σ = 765212112. Its totient is φ = 255070688.

The previous prime is 478257541. The next prime is 478257557. The reversal of 478257555 is 555752874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 478257555 - 2¹² = 478253459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (478257557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15941904 + ... + 15941933.

It is an arithmetic number, because the mean of its divisors is an integer number (95651514).

Almost surely, 2^478257555 is an apocalyptic number.

478257555 is a deficient number, since it is larger than the sum of its proper divisors (286954557).

478257555 is a wasteful number, since it uses less digits than its factorization.

478257555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31883845.

The product of its digits is 1960000, while the sum is 48.

The square root of 478257555 is about 21869.1004616102. The cubic root of 478257555 is about 782.0249570683.

The spelling of 478257555 in words is "four hundred seventy-eight million, two hundred fifty-seven thousand, five hundred fifty-five".