2185505 has 16 divisors (see below), whose sum is σ = 3072384. Its totient is φ = 1461120.

The previous prime is 2185493. The next prime is 2185511. The reversal of 2185505 is 5055812.

It is not a de Polignac number, because 2185505 - 2¹⁶ = 2119969 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 674 + ... + 2196.

It is an arithmetic number, because the mean of its divisors is an integer number (192024).

2^2185505 is an apocalyptic number.

It is an amenable number.

2185505 is a deficient number, since it is larger than the sum of its proper divisors (886879).

2185505 is a wasteful number, since it uses less digits than its factorization.

2185505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 2185505 is about 1478.3453588387. The cubic root of 2185505 is about 129.7728775883.

Multiplying 2185505 by its sum of digits (26), we get a triangular number (56823130 = T₁₀₆₆₀).

The spelling of 2185505 in words is "two million, one hundred eighty-five thousand, five hundred five".