1122561 has 48 divisors (see below), whose sum is σ = 2021760. Its totient is φ = 591360.

The previous prime is 1122551. The next prime is 1122571. The reversal of 1122561 is 1652211.

It is an interprime number because it is at equal distance from previous prime (1122551) and next prime (1122571).

It is not a de Polignac number, because 1122561 - 2⁵ = 1122529 is a prime.

It is a super-3 number, since 3×1122561³ = 4243762827898333443, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1122551) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 38695 + ... + 38723.

It is an arithmetic number, because the mean of its divisors is an integer number (42120).

2^1122561 is an apocalyptic number.

1122561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1122561 is a deficient number, since it is larger than the sum of its proper divisors (899199).

1122561 is a wasteful number, since it uses less digits than its factorization.

1122561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 83 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 1122561 is about 1059.5097923096. The cubic root of 1122561 is about 103.9289764091.

Adding to 1122561 its reverse (1652211), we get a palindrome (2774772).

The spelling of 1122561 in words is "one million, one hundred twenty-two thousand, five hundred sixty-one".