55082681809 has 9 divisors (see below), whose sum is σ = 57054631153. Its totient is φ = 53176707472.

The previous prime is 55082681789. The next prime is 55082681813. The reversal of 55082681809 is 90818628055.

The square root of 55082681809 is 234697.

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

55082681809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 79299025 + 55003382784 = 8905^2 + 234528^2 .

It is not a de Polignac number, because 55082681809 - 2⁵ = 55082681777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55082681839) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6802167 + ... + 6810259.

Almost surely, 2^55082681809 is an apocalyptic number.

55082681809 is the 234697-th square number.

55082681809 is the 117349-th centered octagonal number.

It is an amenable number.

55082681809 is a deficient number, since it is larger than the sum of its proper divisors (1971949344).

55082681809 is an frugal number, since it uses more digits than its factorization.

55082681809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16244 (or 8122 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 52.

The spelling of 55082681809 in words is "fifty-five billion, eighty-two million, six hundred eighty-one thousand, eight hundred nine".