478815057 has 40 divisors (see below), whose sum is σ = 843848192. Its totient is φ = 264772800.

The previous prime is 478815037. The next prime is 478815059. The reversal of 478815057 is 750518874.

It is a happy number.

478815057 is a `hidden beast` number, since 478 + 81 + 50 + 57 = 666.

It is not a de Polignac number, because 478815057 - 2⁶ = 478814993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478815059) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3957 + ... + 31197.

Almost surely, 2^478815057 is an apocalyptic number.

It is an amenable number.

478815057 is a deficient number, since it is larger than the sum of its proper divisors (365033135).

478815057 is a wasteful number, since it uses less digits than its factorization.

478815057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27291 (or 27282 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 45.

The square root of 478815057 is about 21881.8430896485. The cubic root of 478815057 is about 782.3287063599.

The spelling of 478815057 in words is "four hundred seventy-eight million, eight hundred fifteen thousand, fifty-seven".