1563222 has 32 divisors (see below), whose sum is σ = 3282048. Its totient is φ = 495936.

The previous prime is 1563217. The next prime is 1563227. The reversal of 1563222 is 2223651.

It is an interprime number because it is at equal distance from previous prime (1563217) and next prime (1563227).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1563227) 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 15 ways as a sum of consecutive naturals, for example, 18793 + ... + 18875.

It is an arithmetic number, because the mean of its divisors is an integer number (102564).

2^1563222 is an apocalyptic number.

1563222 is an abundant number, since it is smaller than the sum of its proper divisors (1718826).

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

1563222 is a wasteful number, since it uses less digits than its factorization.

1563222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204.

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

The square root of 1563222 is about 1250.2887666455. The cubic root of 1563222 is about 116.0575912995.

Adding to 1563222 its reverse (2223651), we get a palindrome (3786873).

The spelling of 1563222 in words is "one million, five hundred sixty-three thousand, two hundred twenty-two".