1135521 has 12 divisors (see below), whose sum is σ = 1649700. Its totient is φ = 752640.

The previous prime is 1135513. The next prime is 1135531. The reversal of 1135521 is 1255311.

1135521 is a `hidden beast` number, since 113 + 552 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 731025 + 404496 = 855^2 + 636^2 .

It is not a de Polignac number, because 1135521 - 2³ = 1135513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1135494 and 1135503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2305 + ... + 2753.

It is an arithmetic number, because the mean of its divisors is an integer number (137475).

2^1135521 is an apocalyptic number.

It is an amenable number.

1135521 is a deficient number, since it is larger than the sum of its proper divisors (514179).

1135521 is a wasteful number, since it uses less digits than its factorization.

1135521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736 (or 733 counting only the distinct ones).

The product of its digits is 150, while the sum is 18.

The square root of 1135521 is about 1065.6082769949. The cubic root of 1135521 is about 104.3274014145.

The spelling of 1135521 in words is "one million, one hundred thirty-five thousand, five hundred twenty-one".