1135601 has 4 divisors (see below), whose sum is σ = 1139172. Its totient is φ = 1132032.

The previous prime is 1135597. The next prime is 1135613. The reversal of 1135601 is 1065311.

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 774400 + 361201 = 880^2 + 601^2 .

It is a cyclic number.

It is not a de Polignac number, because 1135601 - 2² = 1135597 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1135601.

It is not an unprimeable number, because it can be changed into a prime (1135201) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1256 + ... + 1961.

It is an arithmetic number, because the mean of its divisors is an integer number (284793).

2^1135601 is an apocalyptic number.

It is an amenable number.

1135601 is a deficient number, since it is larger than the sum of its proper divisors (3571).

1135601 is an equidigital number, since it uses as much as digits as its factorization.

1135601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3570.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1135601 is about 1065.6458135797. The cubic root of 1135601 is about 104.3298513901.

The spelling of 1135601 in words is "one million, one hundred thirty-five thousand, six hundred one".