1122555 has 16 divisors (see below), whose sum is σ = 2052864. Its totient is φ = 513120.

The previous prime is 1122551. The next prime is 1122571. The reversal of 1122555 is 5552211.

It is not a de Polignac number, because 1122555 - 2² = 1122551 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a plaindrome in base 10.

It is a zygodrome in base 10.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5241 + ... + 5450.

It is an arithmetic number, because the mean of its divisors is an integer number (128304).

2^1122555 is an apocalyptic number.

1122555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1122555 is a deficient number, since it is larger than the sum of its proper divisors (930309).

1122555 is a wasteful number, since it uses less digits than its factorization.

1122555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10706.

The product of its digits is 500, while the sum is 21.

The square root of 1122555 is about 1059.5069608077. The cubic root of 1122555 is about 103.9287912447.

Adding to 1122555 its reverse (5552211), we get a palindrome (6674766).

The spelling of 1122555 in words is "one million, one hundred twenty-two thousand, five hundred fifty-five".