55179419409 has 9 divisors (see below), whose sum is σ = 79704623739. Its totient is φ = 36785809800.

The previous prime is 55179419389. The next prime is 55179419419. The reversal of 55179419409 is 90491497155.

It is a happy number.

The square root of 55179419409 is 234903.

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

55179419409 is a `hidden beast` number, since 55 + 179 + 4 + 19 + 409 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5119831809 + 50059587600 = 71553^2 + 223740^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 55179419409 - 2¹⁷ = 55179288337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55179419419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 665559 + ... + 743859.

Almost surely, 2^55179419409 is an apocalyptic number.

55179419409 is the 234903-rd square number.

55179419409 is the 117452-nd centered octagonal number.

It is an amenable number.

55179419409 is a deficient number, since it is larger than the sum of its proper divisors (24525204330).

55179419409 is an frugal number, since it uses more digits than its factorization.

55179419409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156608 (or 78304 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 54.

The spelling of 55179419409 in words is "fifty-five billion, one hundred seventy-nine million, four hundred nineteen thousand, four hundred nine".