2051091072 has 256 divisors, whose sum is σ = 6503846400. Its totient is φ = 641986560.

The previous prime is 2051091067. The next prime is 2051091109. The reversal of 2051091072 is 2701901502.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4758697 + ... + 4759127.

It is an arithmetic number, because the mean of its divisors is an integer number (25405650).

Almost surely, 2^2051091072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2051091072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3251923200).

2051091072 is an abundant number, since it is smaller than the sum of its proper divisors (4452755328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2051091072 is an frugal number, since it uses more digits than its factorization.

2051091072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 2051091072 is about 45288.9729625215. The cubic root of 2051091072 is about 1270.5594228761.

Adding to 2051091072 its reverse (2701901502), we get a palindrome (4752992574).

The spelling of 2051091072 in words is "two billion, fifty-one million, ninety-one thousand, seventy-two".