55774056049209 has 27 divisors (see below), whose sum is σ = 80827760164333. Its totient is φ = 37060688532192.

The previous prime is 55774056049207. The next prime is 55774056049267. The reversal of 55774056049209 is 90294065047755.

The square root of 55774056049209 is 7468203.

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

55774056049209 is a `hidden beast` number, since 5 + 5 + 7 + 7 + 4 + 0 + 560 + 49 + 20 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 47999996809209 + 7774059240000 = 6928203^2 + 2788200^2 .

It is not a de Polignac number, because 55774056049209 - 2¹ = 55774056049207 is a prime.

It is a super-2 number, since 2×55774056049209² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55774056049207) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7102257127 + ... + 7102264979.

Almost surely, 2^{55774056049209} is an apocalyptic number.

55774056049209 is the 7468203-rd square number.

55774056049209 is the 3734102-nd centered octagonal number.

It is an amenable number.

55774056049209 is a deficient number, since it is larger than the sum of its proper divisors (25053704115124).

55774056049209 is an frugal number, since it uses more digits than its factorization.

55774056049209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16346 (or 8173 counting only the distinct ones).

The product of its (nonzero) digits is 95256000, while the sum is 63.

The spelling of 55774056049209 in words is "fifty-five trillion, seven hundred seventy-four billion, fifty-six million, forty-nine thousand, two hundred nine".