3521538 has 24 divisors (see below), whose sum is σ = 7877376. Its totient is φ = 1135800.

The previous prime is 3521537. The next prime is 3521543. The reversal of 3521538 is 8351253.

It is a Curzon 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 11 ways as a sum of consecutive naturals, for example, 2598 + ... + 3713.

It is an arithmetic number, because the mean of its divisors is an integer number (328224).

Almost surely, 2^3521538 is an apocalyptic number.

3521538 is an abundant number, since it is smaller than the sum of its proper divisors (4355838).

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

3521538 is a wasteful number, since it uses less digits than its factorization.

3521538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6350 (or 6347 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 3521538 is about 1876.5761375441. The cubic root of 3521538 is about 152.1402502836.

It can be divided in two parts, 35215 and 38, that added together give a palindrome (35253).

The spelling of 3521538 in words is "three million, five hundred twenty-one thousand, five hundred thirty-eight".