2102550 has 48 divisors (see below), whose sum is σ = 5303232. Its totient is φ = 551200.

The previous prime is 2102549. The next prime is 2102557. The reversal of 2102550 is 552012.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 23 ways as a sum of consecutive naturals, for example, 15985 + ... + 16115.

It is an arithmetic number, because the mean of its divisors is an integer number (110484).

2^2102550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2651616).

2102550 is an abundant number, since it is smaller than the sum of its proper divisors (3200682).

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

2102550 is a wasteful number, since it uses less digits than its factorization.

2102550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 2102550 is about 1450.0172412768. The cubic root of 2102550 is about 128.1097284991.

Adding to 2102550 its reverse (552012), we get a palindrome (2654562).

The spelling of 2102550 in words is "two million, one hundred two thousand, five hundred fifty".