2150521040 has 60 divisors (see below), whose sum is σ = 5053807116. Its totient is φ = 851042304.

The previous prime is 2150521039. The next prime is 2150521081. The reversal of 2150521040 is 401250512.

It can be written as a sum of positive squares in 6 ways, for example, as 2383936 + 2148137104 = 1544^2 + 46348^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 751292 + ... + 754148.

Almost surely, 2^2150521040 is an apocalyptic number.

2150521040 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 2150521040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2526903558).

2150521040 is an abundant number, since it is smaller than the sum of its proper divisors (2903286076).

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

2150521040 is an equidigital number, since it uses as much as digits as its factorization.

2150521040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3064 (or 2961 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2150521040 is about 46373.7106559309. The cubic root of 2150521040 is about 1290.7671338012.

Adding to 2150521040 its reverse (401250512), we get a palindrome (2551771552).

The spelling of 2150521040 in words is "two billion, one hundred fifty million, five hundred twenty-one thousand, forty".