1152805 has 4 divisors (see below), whose sum is σ = 1383372. Its totient is φ = 922240.

The previous prime is 1152799. The next prime is 1152841. The reversal of 1152805 is 5082511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 124609 + 1028196 = 353^2 + 1014^2 .

It is not a de Polignac number, because 1152805 - 2⁵ = 1152773 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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, 115276 + ... + 115285.

It is an arithmetic number, because the mean of its divisors is an integer number (345843).

2^1152805 is an apocalyptic number.

It is an amenable number.

1152805 is a deficient number, since it is larger than the sum of its proper divisors (230567).

1152805 is an equidigital number, since it uses as much as digits as its factorization.

1152805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230566.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 1152805 is about 1073.6875709442. The cubic root of 1152805 is about 104.8540678703.

The spelling of 1152805 in words is "one million, one hundred fifty-two thousand, eight hundred five".