1653222 has 16 divisors (see below), whose sum is σ = 3361392. Its totient is φ = 541920.

The previous prime is 1653193. The next prime is 1653227. The reversal of 1653222 is 2223561.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1893 + ... + 2624.

It is an arithmetic number, because the mean of its divisors is an integer number (210087).

2^1653222 is an apocalyptic number.

1653222 is an abundant number, since it is smaller than the sum of its proper divisors (1708170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1653222 is a wasteful number, since it uses less digits than its factorization.

1653222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4583.

The product of its digits is 720, while the sum is 21.

The square root of 1653222 is about 1285.7768080036. The cubic root of 1653222 is about 118.2434407338.

Adding to 1653222 its reverse (2223561), we get a palindrome (3876783).

The spelling of 1653222 in words is "one million, six hundred fifty-three thousand, two hundred twenty-two".