1564222 has 16 divisors (see below), whose sum is σ = 2589552. Its totient is φ = 702720.

The previous prime is 1564183. The next prime is 1564237. The reversal of 1564222 is 2224651.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1564193 and 1564202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1768 + ... + 2500.

It is an arithmetic number, because the mean of its divisors is an integer number (161847).

2^1564222 is an apocalyptic number.

1564222 is a deficient number, since it is larger than the sum of its proper divisors (1025330).

1564222 is a wasteful number, since it uses less digits than its factorization.

1564222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843.

The product of its digits is 960, while the sum is 22.

The square root of 1564222 is about 1250.6886103263. The cubic root of 1564222 is about 116.0823335418.

Adding to 1564222 its reverse (2224651), we get a palindrome (3788873).

The spelling of 1564222 in words is "one million, five hundred sixty-four thousand, two hundred twenty-two".