3531540 has 48 divisors (see below), whose sum is σ = 10039680. Its totient is φ = 927360.

The previous prime is 3531523. The next prime is 3531559. The reversal of 3531540 is 451353.

3531540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3846 + ... + 4674.

It is an arithmetic number, because the mean of its divisors is an integer number (209160).

Almost surely, 2^3531540 is an apocalyptic number.

3531540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3531540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5019840).

3531540 is an abundant number, since it is smaller than the sum of its proper divisors (6508140).

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

3531540 is a wasteful number, since it uses less digits than its factorization.

3531540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912 (or 910 counting only the distinct ones).

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

The square root of 3531540 is about 1879.2392077647. The cubic root of 3531540 is about 152.2841522173.

Adding to 3531540 its reverse (451353), we get a palindrome (3982893).

The spelling of 3531540 in words is "three million, five hundred thirty-one thousand, five hundred forty".