1122855 has 8 divisors (see below), whose sum is σ = 1796592. Its totient is φ = 598848.

The previous prime is 1122841. The next prime is 1122857. The reversal of 1122855 is 5582211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1122855 - 2⁸ = 1122599 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37414 + ... + 37443.

It is an arithmetic number, because the mean of its divisors is an integer number (224574).

2^1122855 is an apocalyptic number.

1122855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1122855 is a deficient number, since it is larger than the sum of its proper divisors (673737).

1122855 is an equidigital number, since it uses as much as digits as its factorization.

1122855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74865.

The product of its digits is 800, while the sum is 24.

The square root of 1122855 is about 1059.6485266351. The cubic root of 1122855 is about 103.9380486560.

The spelling of 1122855 in words is "one million, one hundred twenty-two thousand, eight hundred fifty-five".