2054426721 has 4 divisors (see below), whose sum is σ = 2739235632. Its totient is φ = 1369617812.

The previous prime is 2054426713. The next prime is 2054426743. The reversal of 2054426721 is 1276244502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2054426721 - 2³ = 2054426713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2054426791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342404451 + ... + 342404456.

It is an arithmetic number, because the mean of its divisors is an integer number (684808908).

Almost surely, 2^2054426721 is an apocalyptic number.

It is an amenable number.

2054426721 is a deficient number, since it is larger than the sum of its proper divisors (684808911).

2054426721 is an equidigital number, since it uses as much as digits as its factorization.

2054426721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684808910.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 2054426721 is about 45325.7842844445. The cubic root of 2054426721 is about 1271.2478117587.

The spelling of 2054426721 in words is "two billion, fifty-four million, four hundred twenty-six thousand, seven hundred twenty-one".