11530 has 8 divisors (see below), whose sum is σ = 20772. Its totient is φ = 4608.

The previous prime is 11527. The next prime is 11549. The reversal of 11530 is 3511.

11530 = 46² + 47² + ... + 50².

It can be written as a sum of positive squares in 2 ways, for example, as 11449 + 81 = 107^2 + 9^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 1153 = 11530 / (1 + 1 + 5 + 3 + 0).

It is a nialpdrome in base 5 and base 11.

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, 567 + ... + 586.

2¹¹⁵³⁰ is an apocalyptic number.

11530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11530 is a deficient number, since it is larger than the sum of its proper divisors (9242).

11530 is a wasteful number, since it uses less digits than its factorization.

11530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160.

The product of its (nonzero) digits is 15, while the sum is 10.

The square root of 11530 is about 107.3778375644. The cubic root of 11530 is about 22.5913977756.

The spelling of 11530 in words is "eleven thousand, five hundred thirty".