2054255721 has 16 divisors (see below), whose sum is σ = 3143971200. Its totient is φ = 1168731648.

The previous prime is 2054255719. The next prime is 2054255729. The reversal of 2054255721 is 1275524502.

It is not a de Polignac number, because 2054255721 - 2¹ = 2054255719 is a prime.

It is a super-2 number, since 2×2054255721² = 8439933134522459682, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2054255729) 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 15 ways as a sum of consecutive naturals, for example, 208776 + ... + 218393.

It is an arithmetic number, because the mean of its divisors is an integer number (196498200).

Almost surely, 2^2054255721 is an apocalyptic number.

2054255721 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2054255721 is a deficient number, since it is larger than the sum of its proper divisors (1089715479).

2054255721 is a wasteful number, since it uses less digits than its factorization.

2054255721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427408.

The product of its (nonzero) digits is 28000, while the sum is 33.

The square root of 2054255721 is about 45323.8979016589. The cubic root of 2054255721 is about 1271.2125400525.

The spelling of 2054255721 in words is "two billion, fifty-four million, two hundred fifty-five thousand, seven hundred twenty-one".