1117855 has 8 divisors (see below), whose sum is σ = 1350000. Its totient is φ = 888576.

The previous prime is 1117819. The next prime is 1117861. The reversal of 1117855 is 5587111.

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

It is a cyclic number.

It is not a de Polignac number, because 1117855 - 2¹³ = 1109663 is a prime.

1117855 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271 + ... + 1519.

It is an arithmetic number, because the mean of its divisors is an integer number (168750).

2^1117855 is an apocalyptic number.

1117855 is a deficient number, since it is larger than the sum of its proper divisors (232145).

1117855 is a wasteful number, since it uses less digits than its factorization.

1117855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433.

The product of its digits is 1400, while the sum is 28.

The square root of 1117855 is about 1057.2866214986. The cubic root of 1117855 is about 103.7835426455.

The spelling of 1117855 in words is "one million, one hundred seventeen thousand, eight hundred fifty-five".