1653223 has 12 divisors (see below), whose sum is σ = 1958824. Its totient is φ = 1386000.

The previous prime is 1653193. The next prime is 1653227. The reversal of 1653223 is 3223561.

It is not a de Polignac number, because 1653223 - 2⁵ = 1653191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1653194 and 1653203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1653227) 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 11 ways as a sum of consecutive naturals, for example, 1048 + ... + 2098.

2^1653223 is an apocalyptic number.

1653223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1653223 is a deficient number, since it is larger than the sum of its proper divisors (305601).

1653223 is a wasteful number, since it uses less digits than its factorization.

1653223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086 (or 1075 counting only the distinct ones).

The product of its digits is 1080, while the sum is 22.

The square root of 1653223 is about 1285.7771968735. Note that the first 3 decimals coincide. The cubic root of 1653223 is about 118.2434645748.

Adding to 1653223 its reverse (3223561), we get a palindrome (4876784).

The spelling of 1653223 in words is "one million, six hundred fifty-three thousand, two hundred twenty-three".