56682562561 has 3 divisors (see below), whose sum is σ = 56682800643. Its totient is φ = 56682324480.

The previous prime is 56682562501. The next prime is 56682562571. The reversal of 56682562561 is 16526528665.

The square root of 56682562561 is 238081.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 11670696961 + 45011865600 = 108031^2 + 212160^2 .

It is not a de Polignac number, because 56682562561 - 2²⁷ = 56548344833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56682562499 and 56682562508.

It is not an unprimeable number, because it can be changed into a prime (56682562501) 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 2 ways as a sum of consecutive naturals, for example, 119041 + ... + 357121.

It is an arithmetic number, because the mean of its divisors is an integer number (18894266881).

Almost surely, 2^56682562561 is an apocalyptic number.

56682562561 is the 238081-st square number.

56682562561 is the 119041-st centered octagonal number.

It is an amenable number.

56682562561 is a deficient number, since it is larger than the sum of its proper divisors (238082).

56682562561 is an frugal number, since it uses more digits than its factorization.

56682562561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476162 (or 238081 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 52.

The spelling of 56682562561 in words is "fifty-six billion, six hundred eighty-two million, five hundred sixty-two thousand, five hundred sixty-one".