56776775 has 12 divisors (see below), whose sum is σ = 76803864. Its totient is φ = 41292000.

The previous prime is 56776771. The next prime is 56776781. The reversal of 56776775 is 57767765.

It is not a de Polignac number, because 56776775 - 2² = 56776771 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 (56776771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102956 + ... + 103505.

It is an arithmetic number, because the mean of its divisors is an integer number (6400322).

Almost surely, 2^56776775 is an apocalyptic number.

56776775 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56776775 is a deficient number, since it is larger than the sum of its proper divisors (20027089).

56776775 is a wasteful number, since it uses less digits than its factorization.

56776775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206482 (or 206477 counting only the distinct ones).

The product of its digits is 2160900, while the sum is 50.

The square root of 56776775 is about 7535.0364962620. The cubic root of 56776775 is about 384.3470689379.

The spelling of 56776775 in words is "fifty-six million, seven hundred seventy-six thousand, seven hundred seventy-five".