2188523 has 4 divisors (see below), whose sum is σ = 2197920. Its totient is φ = 2179128.

The previous prime is 2188493. The next prime is 2188531. The reversal of 2188523 is 3258812.

2188523 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.

It is a cyclic number.

It is not a de Polignac number, because 2188523 - 2⁸ = 2188267 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188583) 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, 4340 + ... + 4817.

It is an arithmetic number, because the mean of its divisors is an integer number (549480).

2^2188523 is an apocalyptic number.

2188523 is a deficient number, since it is larger than the sum of its proper divisors (9397).

2188523 is an equidigital number, since it uses as much as digits as its factorization.

2188523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9396.

The product of its digits is 3840, while the sum is 29.

The square root of 2188523 is about 1479.3657424721. The cubic root of 2188523 is about 129.8325852839.

The spelling of 2188523 in words is "two million, one hundred eighty-eight thousand, five hundred twenty-three".