2171000 has 64 divisors (see below), whose sum is σ = 5503680. Its totient is φ = 796800.

The previous prime is 2170943. The next prime is 2171003. The reversal of 2171000 is 1712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171003) 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 15 ways as a sum of consecutive naturals, for example, 12917 + ... + 13083.

It is an arithmetic number, because the mean of its divisors is an integer number (85995).

2^2171000 is an apocalyptic number.

2171000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2171000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2751840).

2171000 is an abundant number, since it is smaller than the sum of its proper divisors (3332680).

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

2171000 is a wasteful number, since it uses less digits than its factorization.

2171000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 14, while the sum is 11.

The square root of 2171000 is about 1473.4313692874. The cubic root of 2171000 is about 129.4851431205.

Adding to 2171000 its reverse (1712), we get a palindrome (2172712).

The spelling of 2171000 in words is "two million, one hundred seventy-one thousand".