2055443569 has 3 divisors (see below), whose sum is σ = 2055488907. Its totient is φ = 2055398232.

The previous prime is 2055443549. The next prime is 2055443581. The reversal of 2055443569 is 9653445502.

The square root of 2055443569 is 45337.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1436031025 + 619412544 = 37895^2 + 24888^2 .

It is not a de Polignac number, because 2055443569 - 2¹⁹ = 2054919281 is a prime.

It is a super-2 number, since 2×2055443569² = 8449696530686915522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2055443549) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 22669 + ... + 68005.

It is an arithmetic number, because the mean of its divisors is an integer number (685162969).

Almost surely, 2^2055443569 is an apocalyptic number.

2055443569 is the 45337-th square number.

2055443569 is the 22669-th centered octagonal number.

It is an amenable number.

2055443569 is a deficient number, since it is larger than the sum of its proper divisors (45338).

2055443569 is an frugal number, since it uses more digits than its factorization.

2055443569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90674 (or 45337 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 43.

The cubic root of 2055443569 is about 1271.4575138247.

The spelling of 2055443569 in words is "two billion, fifty-five million, four hundred forty-three thousand, five hundred sixty-nine".