2006550 has 144 divisors (see below), whose sum is σ = 6770400. Its totient is φ = 423360.

The previous prime is 2006549. The next prime is 2006573. The reversal of 2006550 is 556002.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 154344 + ... + 154356.

2^2006550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2006550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3385200).

2006550 is an abundant number, since it is smaller than the sum of its proper divisors (4763850).

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

2006550 is a wasteful number, since it uses less digits than its factorization.

2006550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52 (or 30 counting only the distinct ones).

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

The square root of 2006550 is about 1416.5274441394. The cubic root of 2006550 is about 126.1294964940.

It can be divided in two parts, 2006 and 550, that added together give a triangular number (2556 = T₇₁).

The spelling of 2006550 in words is "two million, six thousand, five hundred fifty".