3521299050 has 72 divisors (see below), whose sum is σ = 9473970636. Its totient is φ = 937681920.

The previous prime is 3521299043. The next prime is 3521299073. The reversal of 3521299050 is 509921253.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 571831569 + 2949467481 = 23913^2 + 54309^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3521298996 and 3521299014.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 335482 + ... + 345818.

Almost surely, 2^3521299050 is an apocalyptic number.

3521299050 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3521299050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4736985318).

3521299050 is an abundant number, since it is smaller than the sum of its proper divisors (5952671586).

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

3521299050 is a wasteful number, since it uses less digits than its factorization.

3521299050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11112 (or 11104 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 3521299050 is about 59340.5346285320. The cubic root of 3521299050 is about 1521.3680910391.

The spelling of 3521299050 in words is "three billion, five hundred twenty-one million, two hundred ninety-nine thousand, fifty".