1172285 has 4 divisors (see below), whose sum is σ = 1406748. Its totient is φ = 937824.

The previous prime is 1172279. The next prime is 1172317. The reversal of 1172285 is 5822711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5822711 = 151 ⋅38561.

It can be written as a sum of positive squares in 2 ways, for example, as 320356 + 851929 = 566^2 + 923^2 .

It is a cyclic number.

It is not a de Polignac number, because 1172285 - 2⁸ = 1172029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117224 + ... + 117233.

It is an arithmetic number, because the mean of its divisors is an integer number (351687).

2^1172285 is an apocalyptic number.

It is an amenable number.

1172285 is a deficient number, since it is larger than the sum of its proper divisors (234463).

1172285 is an equidigital number, since it uses as much as digits as its factorization.

1172285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234462.

The product of its digits is 1120, while the sum is 26.

The square root of 1172285 is about 1082.7211090581. The cubic root of 1172285 is about 105.4413771030.

Adding to 1172285 its reverse (5822711), we get a palindrome (6994996).

The spelling of 1172285 in words is "one million, one hundred seventy-two thousand, two hundred eighty-five".