3521532 has 72 divisors (see below), whose sum is σ = 9824976. Its totient is φ = 978432.

The previous prime is 3521527. The next prime is 3521537. The reversal of 3521532 is 2351253.

It is an interprime number because it is at equal distance from previous prime (3521527) and next prime (3521537).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 3521499 and 3521508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31108 + ... + 31220.

It is an arithmetic number, because the mean of its divisors is an integer number (136458).

Almost surely, 2^3521532 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 3521532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4912488).

3521532 is an abundant number, since it is smaller than the sum of its proper divisors (6303444).

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

3521532 is a wasteful number, since it uses less digits than its factorization.

3521532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 178 counting only the distinct ones).

The product of its digits is 900, while the sum is 21.

The square root of 3521532 is about 1876.5745388873. The cubic root of 3521532 is about 152.1401638780.

Adding to 3521532 its reverse (2351253), we get a palindrome (5872785).

The spelling of 3521532 in words is "three million, five hundred twenty-one thousand, five hundred thirty-two".