2153885 has 8 divisors (see below), whose sum is σ = 2611896. Its totient is φ = 1704960.

The previous prime is 2153873. The next prime is 2153887. The reversal of 2153885 is 5883512.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 120409 + 2033476 = 347^2 + 1426^2 .

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

It is not a de Polignac number, because 2153885 - 2¹⁰ = 2152861 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 (2153887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1736 + ... + 2705.

It is an arithmetic number, because the mean of its divisors is an integer number (326487).

2^2153885 is an apocalyptic number.

It is an amenable number.

2153885 is a deficient number, since it is larger than the sum of its proper divisors (458011).

2153885 is an equidigital number, since it uses as much as digits as its factorization.

2153885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4543.

The product of its digits is 9600, while the sum is 32.

The square root of 2153885 is about 1467.6120059471. The cubic root of 2153885 is about 129.1439812166.

The spelling of 2153885 in words is "two million, one hundred fifty-three thousand, eight hundred eighty-five".