56287878 has 32 divisors (see below), whose sum is σ = 119362560. Its totient is φ = 17664480.

The previous prime is 56287873. The next prime is 56287897. The reversal of 56287878 is 87878265.

56287878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 56287878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56287873) 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 15 ways as a sum of consecutive naturals, for example, 2793 + ... + 10971.

It is an arithmetic number, because the mean of its divisors is an integer number (3730080).

Almost surely, 2^56287878 is an apocalyptic number.

56287878 is an abundant number, since it is smaller than the sum of its proper divisors (63074682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56287878 is a wasteful number, since it uses less digits than its factorization.

56287878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8252.

The product of its digits is 1505280, while the sum is 51.

The square root of 56287878 is about 7502.5247750341. The cubic root of 56287878 is about 383.2407006585.

The spelling of 56287878 in words is "fifty-six million, two hundred eighty-seven thousand, eight hundred seventy-eight".