56505478 has 8 divisors (see below), whose sum is σ = 85058568. Its totient is φ = 28152624.

The previous prime is 56505451. The next prime is 56505479. The reversal of 56505478 is 87450565.

56505478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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

It is a self number, because there is not a number n which added to its sum of digits gives 56505478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56505479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49351 + ... + 50482.

It is an arithmetic number, because the mean of its divisors is an integer number (10632321).

Almost surely, 2^56505478 is an apocalyptic number.

56505478 is a deficient number, since it is larger than the sum of its proper divisors (28553090).

56505478 is a wasteful number, since it uses less digits than its factorization.

56505478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100118.

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 56505478 is about 7517.0125714941. The cubic root of 56505478 is about 383.7339148757.

The spelling of 56505478 in words is "fifty-six million, five hundred five thousand, four hundred seventy-eight".