2055123521 has 12 divisors (see below), whose sum is σ = 2273150160. Its totient is φ = 1842648480.

The previous prime is 2055123509. The next prime is 2055123529. The reversal of 2055123521 is 1253215502.

It is a de Polignac number, because none of the positive numbers 2^k-2055123521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2055123529) 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 11 ways as a sum of consecutive naturals, for example, 41090 + ... + 76148.

It is an arithmetic number, because the mean of its divisors is an integer number (189429180).

Almost surely, 2^2055123521 is an apocalyptic number.

It is an amenable number.

2055123521 is a deficient number, since it is larger than the sum of its proper divisors (218026639).

2055123521 is an equidigital number, since it uses as much as digits as its factorization.

2055123521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35216 (or 35143 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 2055123521 is about 45333.4702069012. The cubic root of 2055123521 is about 1271.3915185714.

The spelling of 2055123521 in words is "two billion, fifty-five million, one hundred twenty-three thousand, five hundred twenty-one".