1143513 has 18 divisors (see below), whose sum is σ = 1922154. Its totient is φ = 653184.

The previous prime is 1143487. The next prime is 1143529. The reversal of 1143513 is 3153411.

It can be written as a sum of positive squares in only one way, i.e., 1016064 + 127449 = 1008^2 + 357^2 .

It is not a de Polignac number, because 1143513 - 2⁵ = 1143481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143563) 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 17 ways as a sum of consecutive naturals, for example, 856 + ... + 1737.

2^1143513 is an apocalyptic number.

It is an amenable number.

1143513 is a deficient number, since it is larger than the sum of its proper divisors (778641).

1143513 is a wasteful number, since it uses less digits than its factorization.

1143513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613 (or 2603 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 1143513 is about 1069.3516727438. The cubic root of 1143513 is about 104.5715877386.

Adding to 1143513 its reverse (3153411), we get a palindrome (4296924).

The spelling of 1143513 in words is "one million, one hundred forty-three thousand, five hundred thirteen".