1122564 has 24 divisors (see below), whose sum is σ = 2642080. Its totient is φ = 370944.

The previous prime is 1122551. The next prime is 1122571. The reversal of 1122564 is 4652211.

It is a self number, because there is not a number n which added to its sum of digits gives 1122564.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1332 + ... + 2004.

2^1122564 is an apocalyptic number.

It is an amenable number.

1122564 is an abundant number, since it is smaller than the sum of its proper divisors (1519516).

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

1122564 is a wasteful number, since it uses less digits than its factorization.

1122564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819 (or 817 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 1122564 is about 1059.5112080578. The cubic root of 1122564 is about 103.9290689910.

Adding to 1122564 its reverse (4652211), we get a palindrome (5774775).

The spelling of 1122564 in words is "one million, one hundred twenty-two thousand, five hundred sixty-four".