2153785 has 8 divisors (see below), whose sum is σ = 2621376. Its totient is φ = 1698480.

The previous prime is 2153779. The next prime is 2153797. The reversal of 2153785 is 5873512.

2153785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2153785 - 2⁹ = 2153273 is a prime.

It is a Duffinian number.

2153785 is a lucky number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2679 + ... + 3388.

It is an arithmetic number, because the mean of its divisors is an integer number (327672).

2^2153785 is an apocalyptic number.

It is an amenable number.

2153785 is a deficient number, since it is larger than the sum of its proper divisors (467591).

2153785 is an equidigital number, since it uses as much as digits as its factorization.

2153785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6143.

The product of its digits is 8400, while the sum is 31.

The square root of 2153785 is about 1467.5779366017. The cubic root of 2153785 is about 129.1419825649.

The spelling of 2153785 in words is "two million, one hundred fifty-three thousand, seven hundred eighty-five".