2102556 has 24 divisors (see below), whose sum is σ = 4967424. Its totient is φ = 692080.

The previous prime is 2102549. The next prime is 2102557. The reversal of 2102556 is 6552012.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102557) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 60 + ... + 2051.

It is an arithmetic number, because the mean of its divisors is an integer number (206976).

2^2102556 is an apocalyptic number.

It is an amenable number.

2102556 is an abundant number, since it is smaller than the sum of its proper divisors (2864868).

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

2102556 is a wasteful number, since it uses less digits than its factorization.

2102556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201 (or 2199 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2102556 is about 1450.0193102162. The cubic root of 2102556 is about 128.1098503603.

Adding to 2102556 its reverse (6552012), we get a palindrome (8654568).

The spelling of 2102556 in words is "two million, one hundred two thousand, five hundred fifty-six".