2165250 has 32 divisors (see below), whose sum is σ = 5406336. Its totient is φ = 577200.

The previous prime is 2165249. The next prime is 2165291. The reversal of 2165250 is 525612.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694 + ... + 2193.

It is an arithmetic number, because the mean of its divisors is an integer number (168948).

2^2165250 is an apocalyptic number.

2165250 is an abundant number, since it is smaller than the sum of its proper divisors (3241086).

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

2165250 is a wasteful number, since it uses less digits than its factorization.

2165250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2907 (or 2897 counting only the distinct ones).

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

The square root of 2165250 is about 1471.4788479621. The cubic root of 2165250 is about 129.3707261301.

It can be divided in two parts, 2165 and 250, that added together give a triangular number (2415 = T₆₉).

The spelling of 2165250 in words is "two million, one hundred sixty-five thousand, two hundred fifty".