56878755277 has 4 divisors (see below), whose sum is σ = 56971543420. Its totient is φ = 56785967136.

The previous prime is 56878755253. The next prime is 56878755313. The reversal of 56878755277 is 77255787865.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13255837956 + 43622917321 = 115134^2 + 208861^2 .

It is a cyclic number.

It is not a de Polignac number, because 56878755277 - 2³¹ = 54731271629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56878755077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46393152 + ... + 46394377.

It is an arithmetic number, because the mean of its divisors is an integer number (14242885855).

Almost surely, 2^56878755277 is an apocalyptic number.

It is an amenable number.

56878755277 is a deficient number, since it is larger than the sum of its proper divisors (92788143).

56878755277 is an equidigital number, since it uses as much as digits as its factorization.

56878755277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92788142.

The product of its digits is 230496000, while the sum is 67.

The spelling of 56878755277 in words is "fifty-six billion, eight hundred seventy-eight million, seven hundred fifty-five thousand, two hundred seventy-seven".