2153823 has 8 divisors (see below), whose sum is σ = 3282048. Its totient is φ = 1230744.

The previous prime is 2153819. The next prime is 2153839. The reversal of 2153823 is 3283512.

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

It is not a de Polignac number, because 2153823 - 2² = 2153819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2153793 and 2153802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51261 + ... + 51302.

It is an arithmetic number, because the mean of its divisors is an integer number (410256).

2^2153823 is an apocalyptic number.

2153823 is a deficient number, since it is larger than the sum of its proper divisors (1128225).

2153823 is a wasteful number, since it uses less digits than its factorization.

2153823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102573.

The product of its digits is 1440, while the sum is 24.

The square root of 2153823 is about 1467.5908830461. The cubic root of 2153823 is about 129.1427420598.

The spelling of 2153823 in words is "two million, one hundred fifty-three thousand, eight hundred twenty-three".