56311778 has 8 divisors (see below), whose sum is σ = 86527980. Its totient is φ = 27469120.

The previous prime is 56311777. The next prime is 56311793. The reversal of 56311778 is 87711365.

It can be written as a sum of positive squares in 2 ways, for example, as 49463089 + 6848689 = 7033^2 + 2617^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56311771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343283 + ... + 343446.

Almost surely, 2^56311778 is an apocalyptic number.

56311778 is a deficient number, since it is larger than the sum of its proper divisors (30216202).

56311778 is a wasteful number, since it uses less digits than its factorization.

56311778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686772.

The product of its digits is 35280, while the sum is 38.

The square root of 56311778 is about 7504.1174031328. The cubic root of 56311778 is about 383.2949346960.

The spelling of 56311778 in words is "fifty-six million, three hundred eleven thousand, seven hundred seventy-eight".