3520513 has 16 divisors (see below), whose sum is σ = 3980880. Its totient is φ = 3096576.

The previous prime is 3520511. The next prime is 3520519. The reversal of 3520513 is 3150253.

It can be written as a sum of positive squares in 8 ways, for example, as 219024 + 3301489 = 468^2 + 1817^2 .

It is a cyclic number.

It is not a de Polignac number, because 3520513 - 2¹ = 3520511 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (3520511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18145 + ... + 18337.

It is an arithmetic number, because the mean of its divisors is an integer number (248805).

It is a Proth number, since it is equal to 1719 ⋅ 2¹¹ + 1 and 1719 < 2¹¹.

Almost surely, 2^3520513 is an apocalyptic number.

It is an amenable number.

3520513 is a deficient number, since it is larger than the sum of its proper divisors (460367).

3520513 is a wasteful number, since it uses less digits than its factorization.

3520513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 3520513 is about 1876.3030139079. The cubic root of 3520513 is about 152.1254878996.

Adding to 3520513 its reverse (3150253), we get a palindrome (6670766).

The spelling of 3520513 in words is "three million, five hundred twenty thousand, five hundred thirteen".