56886543081 has 15 divisors (see below), whose sum is σ = 84981869863. Its totient is φ = 37922931000.

The previous prime is 56886543073. The next prime is 56886543089. The reversal of 56886543081 is 18034568865.

The square root of 56886543081 is 238509.

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

56886543081 is a `hidden beast` number, since 56 + 8 + 86 + 5 + 430 + 81 = 666.

It is an interprime number because it is at equal distance from previous prime (56886543073) and next prime (56886543089).

It can be written as a sum of positive squares in only one way, i.e., 19583483481 + 37303059600 = 139941^2 + 193140^2 .

It is not a de Polignac number, because 56886543081 - 2³ = 56886543073 is a prime.

It is a super-2 number, since 2×56886543081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56886543089) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2133331 + ... + 2159831.

Almost surely, 2^56886543081 is an apocalyptic number.

56886543081 is the 238509-th square number.

56886543081 is the 119255-th centered octagonal number.

It is an amenable number.

56886543081 is a deficient number, since it is larger than the sum of its proper divisors (28095326782).

56886543081 is an frugal number, since it uses more digits than its factorization.

56886543081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53014 (or 26504 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 56886543081 in words is "fifty-six billion, eight hundred eighty-six million, five hundred forty-three thousand, eighty-one".