2051054040 has 128 divisors (see below), whose sum is σ = 7046300160. Its totient is φ = 467871744.

The previous prime is 2051054021. The next prime is 2051054059. The reversal of 2051054040 is 404501502.

It is an interprime number because it is at equal distance from previous prime (2051054021) and next prime (2051054059).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 2051053998 and 2051054016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 470752 + ... + 475088.

It is an arithmetic number, because the mean of its divisors is an integer number (55049220).

Almost surely, 2^2051054040 is an apocalyptic number.

2051054040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2051054040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3523150080).

2051054040 is an abundant number, since it is smaller than the sum of its proper divisors (4995246120).

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

2051054040 is a wasteful number, since it uses less digits than its factorization.

2051054040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4921 (or 4917 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 2051054040 is about 45288.5641194331. The cubic root of 2051054040 is about 1270.5517762727.

Adding to 2051054040 its reverse (404501502), we get a palindrome (2455555542).

The spelling of 2051054040 in words is "two billion, fifty-one million, fifty-four thousand, forty".