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56777 = 78111

56777 has 4 divisors (see below), whose sum is σ = 64896. Its totient is φ = 48660.

The previous prime is 56773. The next prime is 56779. The reversal of 56777 is 77765.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56777 - 22 = 56773 is a prime.

It is a Duffinian number.

56777 is a modest number, since divided by 777 gives 56 as remainder.

It is a plaindrome in base 10.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 56777.

It is not an unprimeable number, because it can be changed into a prime (56773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4049 + ... + 4062.

It is an arithmetic number, because the mean of its divisors is an integer number (16224).

256777 is an apocalyptic number.

It is an amenable number.

56777 is a deficient number, since it is larger than the sum of its proper divisors (8119).

56777 is an equidigital number, since it uses as much as digits as its factorization.

56777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8118.

The product of its digits is 10290, while the sum is 32.

The square root of 56777 is about 238.2792479424. The cubic root of 56777 is about 38.4347576645.

The spelling of 56777 in words is "fifty-six thousand, seven hundred seventy-seven".

Divisors: 1 7 8111 56777