2105532 has 72 divisors (see below), whose sum is σ = 6268080. Its totient is φ = 587520.

The previous prime is 2105513. The next prime is 2105549. The reversal of 2105532 is 2355012.

Added to its reverse (2355012) it gives a square (4460544 = 2112²).

It is a happy number.

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

It is a d-powerful number, because it can be written as 2¹¹ + 1 + 0 + 5⁵ + 5⁵ + 3⁴ + 2²¹ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4944 + ... + 5352.

2^2105532 is an apocalyptic number.

2105532 is a gapful number since it is divisible by the number (22) 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 2105532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3134040).

2105532 is an abundant number, since it is smaller than the sum of its proper divisors (4162548).

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

2105532 is a wasteful number, since it uses less digits than its factorization.

2105532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 2105532 is about 1451.0451405797. The cubic root of 2105532 is about 128.1702649505.

Adding to 2105532 its reverse (2355012), we get a square (4460544 = 2112²).

The spelling of 2105532 in words is "two million, one hundred five thousand, five hundred thirty-two".