3212521 has 6 divisors (see below), whose sum is σ = 3478830. Its totient is φ = 2965248.

The previous prime is 3212519. The next prime is 3212527. The reversal of 3212521 is 1252123.

It can be written as a sum of positive squares in 3 ways, for example, as 114921 + 3097600 = 339^2 + 1760^2 .

It is not a de Polignac number, because 3212521 - 2¹ = 3212519 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 3212495 and 3212504.

It is not an unprimeable number, because it can be changed into a prime (3212527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9336 + ... + 9673.

It is an arithmetic number, because the mean of its divisors is an integer number (579805).

Almost surely, 2^3212521 is an apocalyptic number.

It is an amenable number.

3212521 is a deficient number, since it is larger than the sum of its proper divisors (266309).

3212521 is a wasteful number, since it uses less digits than its factorization.

3212521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19035 (or 19022 counting only the distinct ones).

The product of its digits is 120, while the sum is 16.

The square root of 3212521 is about 1792.3506911316. The cubic root of 3212521 is about 147.5532088029.

Adding to 3212521 its reverse (1252123), we get a palindrome (4464644).

The spelling of 3212521 in words is "three million, two hundred twelve thousand, five hundred twenty-one".