2185453 has 4 divisors (see below), whose sum is σ = 2232000. Its totient is φ = 2138908.

The previous prime is 2185439. The next prime is 2185471. The reversal of 2185453 is 3545812.

2185453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2185453 - 2²¹ = 88301 is a prime.

It is an Ulam number.

It is a Duffinian number.

2185453 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23203 + ... + 23296.

It is an arithmetic number, because the mean of its divisors is an integer number (558000).

2^2185453 is an apocalyptic number.

It is an amenable number.

2185453 is a deficient number, since it is larger than the sum of its proper divisors (46547).

2185453 is an equidigital number, since it uses as much as digits as its factorization.

2185453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46546.

The product of its digits is 4800, while the sum is 28.

The square root of 2185453 is about 1478.3277715040. The cubic root of 2185453 is about 129.7718483459.

It can be divided in two parts, 218 and 5453, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 2185453 in words is "two million, one hundred eighty-five thousand, four hundred fifty-three".