2103556 has 24 divisors (see below), whose sum is σ = 4531520. Its totient is φ = 832032.

The previous prime is 2103553. The next prime is 2103583. The reversal of 2103556 is 6553012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2103553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2526 + ... + 3253.

2^2103556 is an apocalyptic number.

2103556 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2103556 is an abundant number, since it is smaller than the sum of its proper divisors (2427964).

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

2103556 is a wasteful number, since it uses less digits than its factorization.

2103556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5803 (or 5801 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 2103556 is about 1450.3640922196. The cubic root of 2103556 is about 128.1301573177.

Adding to 2103556 its reverse (6553012), we get a palindrome (8656568).

The spelling of 2103556 in words is "two million, one hundred three thousand, five hundred fifty-six".