2100550 has 24 divisors (see below), whose sum is σ = 4001976. Its totient is φ = 819840.

The previous prime is 2100541. The next prime is 2100551. The reversal of 2100550 is 550012.

It is a self number, because there is not a number n which added to its sum of digits gives 2100550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100551) 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 11 ways as a sum of consecutive naturals, for example, 1662 + ... + 2638.

It is an arithmetic number, because the mean of its divisors is an integer number (166749).

2^2100550 is an apocalyptic number.

2100550 is a deficient number, since it is larger than the sum of its proper divisors (1901426).

2100550 is a wasteful number, since it uses less digits than its factorization.

2100550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032 (or 1027 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 2100550 is about 1449.3274302241. The cubic root of 2100550 is about 128.0690951823.

Adding to 2100550 its reverse (550012), we get a palindrome (2650562).

The spelling of 2100550 in words is "two million, one hundred thousand, five hundred fifty".