1171285 has 8 divisors (see below), whose sum is σ = 1425240.
Its totient is φ = 923904.
The previous prime is 1171267. The next prime is 1171301. The reversal of 1171285 is 5821711.
It can be written as a sum of positive squares in 4 ways, for example, as 167281 + 1004004 = 409^2 + 1002^2
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 1171285 - 25 = 1171253 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1240 + ... + 1969.
It is an arithmetic number, because the mean of its divisors is an integer number (178155).
21171285 is an apocalyptic number.
It is an amenable number.
1171285 is a deficient number, since it is larger than the sum of its proper divisors (253955).
1171285 is an equidigital number, since it uses as much as digits as its factorization.
1171285 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3287.
The product of its digits is 560, while the sum is 25.
The square root of 1171285 is about 1082.2592110950.
The cubic root of 1171285 is about 105.4113868495.
Adding to 1171285 its reverse (5821711), we get a palindrome (6992996).
The spelling of 1171285 in words is "one million, one hundred seventy-one thousand, two hundred eighty-five".