3213522 has 48 divisors (see below), whose sum is σ = 7757568. Its totient is φ = 954720.

The previous prime is 3213499. The next prime is 3213559. The reversal of 3213522 is 2253123.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3213495 and 3213504.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7033 + ... + 7475.

It is an arithmetic number, because the mean of its divisors is an integer number (161616).

Almost surely, 2^3213522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3213522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3878784).

3213522 is an abundant number, since it is smaller than the sum of its proper divisors (4544046).

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

3213522 is a wasteful number, since it uses less digits than its factorization.

3213522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 492 counting only the distinct ones).

The product of its digits is 360, while the sum is 18.

The square root of 3213522 is about 1792.6299116103. The cubic root of 3213522 is about 147.5685327415.

Adding to 3213522 its reverse (2253123), we get a palindrome (5466645).

The spelling of 3213522 in words is "three million, two hundred thirteen thousand, five hundred twenty-two".