3521255200 has 72 divisors (see below), whose sum is σ = 8685076932. Its totient is φ = 1393950720.

The previous prime is 3521255191. The next prime is 3521255201. The reversal of 3521255200 is 25521253.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1275632656 + 2245622544 = 35716^2 + 47388^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (3521255201) 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 11 ways as a sum of consecutive naturals, for example, 54912 + ... + 100288.

Almost surely, 2^3521255200 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 3521255200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4342538466).

3521255200 is an abundant number, since it is smaller than the sum of its proper divisors (5163821732).

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

3521255200 is a wasteful number, since it uses less digits than its factorization.

3521255200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45494 (or 45481 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 3521255200 is about 59340.1651497533. The cubic root of 3521255200 is about 1521.3617759201.

Adding to 3521255200 its reverse (25521253), we get a palindrome (3546776453).

The spelling of 3521255200 in words is "three billion, five hundred twenty-one million, two hundred fifty-five thousand, two hundred".