11534563 has 4 divisors (see below), whose sum is σ = 11543328. Its totient is φ = 11525800.

The previous prime is 11534543. The next prime is 11534591. The reversal of 11534563 is 36543511.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 36543511 = 2731 ⋅13381.

It is a cyclic number.

It is not a de Polignac number, because 11534563 - 2²¹ = 9437411 is a prime.

It is a super-2 number, since 2×11534563² = 266092287201938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11534533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1963 + ... + 5188.

It is an arithmetic number, because the mean of its divisors is an integer number (2885832).

Almost surely, 2^11534563 is an apocalyptic number.

11534563 is a deficient number, since it is larger than the sum of its proper divisors (8765).

11534563 is an equidigital number, since it uses as much as digits as its factorization.

11534563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8764.

The product of its digits is 5400, while the sum is 28.

The square root of 11534563 is about 3396.2572046298. The cubic root of 11534563 is about 225.9437756605.

The spelling of 11534563 in words is "eleven million, five hundred thirty-four thousand, five hundred sixty-three".