56385478 has 4 divisors (see below), whose sum is σ = 84578220. Its totient is φ = 28192738.

The previous prime is 56385473. The next prime is 56385499. The reversal of 56385478 is 87458365.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87458365 = 5 ⋅17491673.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56385473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14096368 + ... + 14096371.

It is an arithmetic number, because the mean of its divisors is an integer number (21144555).

Almost surely, 2^56385478 is an apocalyptic number.

56385478 is a deficient number, since it is larger than the sum of its proper divisors (28192742).

56385478 is a wasteful number, since it uses less digits than its factorization.

56385478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28192741.

The product of its digits is 806400, while the sum is 46.

The square root of 56385478 is about 7509.0264348982. The cubic root of 56385478 is about 383.4620786623.

The spelling of 56385478 in words is "fifty-six million, three hundred eighty-five thousand, four hundred seventy-eight".