2055722161 has 8 divisors (see below), whose sum is σ = 2188675944. Its totient is φ = 1924104960.

The previous prime is 2055722147. The next prime is 2055722173. The reversal of 2055722161 is 1612275502.

It can be written as a sum of positive squares in 4 ways, for example, as 6561 + 2055715600 = 81^2 + 45340^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2055722161 - 2⁷ = 2055722033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2055722111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330970 + ... + 337123.

It is an arithmetic number, because the mean of its divisors is an integer number (273584493).

Almost surely, 2^2055722161 is an apocalyptic number.

It is an amenable number.

2055722161 is a deficient number, since it is larger than the sum of its proper divisors (132953783).

2055722161 is a wasteful number, since it uses less digits than its factorization.

2055722161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668291.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 2055722161 is about 45340.0723532727. The cubic root of 2055722161 is about 1271.5149550983.

Adding to 2055722161 its reverse (1612275502), we get a palindrome (3667997663).

The spelling of 2055722161 in words is "two billion, fifty-five million, seven hundred twenty-two thousand, one hundred sixty-one".