56512787 has 4 divisors (see below), whose sum is σ = 57579120. Its totient is φ = 55446456.

The previous prime is 56512759. The next prime is 56512789. The reversal of 56512787 is 78721565.

56512787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56512787 - 2⁶ = 56512723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56512789) 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, 533087 + ... + 533192.

It is an arithmetic number, because the mean of its divisors is an integer number (14394780).

Almost surely, 2^56512787 is an apocalyptic number.

56512787 is a deficient number, since it is larger than the sum of its proper divisors (1066333).

56512787 is a wasteful number, since it uses less digits than its factorization.

56512787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066332.

The product of its digits is 117600, while the sum is 41.

The square root of 56512787 is about 7517.4987196540. The cubic root of 56512787 is about 383.7504595269.

The spelling of 56512787 in words is "fifty-six million, five hundred twelve thousand, seven hundred eighty-seven".