2055205639 has 4 divisors (see below), whose sum is σ = 2076393424. Its totient is φ = 2034017856.

The previous prime is 2055205577. The next prime is 2055205643. The reversal of 2055205639 is 9365025502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2055205639 - 2¹⁵ = 2055172871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2055205598 and 2055205607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2055205739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10593747 + ... + 10593940.

It is an arithmetic number, because the mean of its divisors is an integer number (519098356).

Almost surely, 2^2055205639 is an apocalyptic number.

2055205639 is a deficient number, since it is larger than the sum of its proper divisors (21187785).

2055205639 is an equidigital number, since it uses as much as digits as its factorization.

2055205639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21187784.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 2055205639 is about 45334.3759083546. The cubic root of 2055205639 is about 1271.4084523043.

The spelling of 2055205639 in words is "two billion, fifty-five million, two hundred five thousand, six hundred thirty-nine".