2057440056 has 128 divisors (see below), whose sum is σ = 6106752000. Its totient is φ = 565373952.

The previous prime is 2057440043. The next prime is 2057440057. The reversal of 2057440056 is 6500447502.

It is a junction number, because it is equal to n+sod(n) for n = 2057439999 and 2057440026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057440057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 551365 + ... + 555083.

It is an arithmetic number, because the mean of its divisors is an integer number (47709000).

Almost surely, 2^2057440056 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 2057440056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3053376000).

2057440056 is an abundant number, since it is smaller than the sum of its proper divisors (4049311944).

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

2057440056 is a wasteful number, since it uses less digits than its factorization.

2057440056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3861 (or 3857 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 2057440056 is about 45359.0129522237. The cubic root of 2057440056 is about 1271.8690433196.

Adding to 2057440056 its reverse (6500447502), we get a palindrome (8557887558).

The spelling of 2057440056 in words is "two billion, fifty-seven million, four hundred forty thousand, fifty-six".